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<a data-link href="../../../../../engine/installation/rackspace/" class=""> Installation on Rackspace Cloud</a>
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<a data-link href="../../../../../engine/installation/joyent/" class=""> Joyent Triton Elastic Container Service</a>
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<a data-link href="../../../../../engine/userguide/" class=""> The Docker user guide</a>
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<a data-link href="../../../../../engine/articles/dockerfile_best-practices/" class=""> Best practices for writing Dockerfiles</a>
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<a data-link href="../../../../../engine/articles/baseimages/" class=""> Create a base image</a>
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<a data-link href="../../../../../engine/userguide/usingdocker/" class=""> Run a simple application</a>
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<a data-link href="../../../../../engine/userguide/dockerimages/" class=""> Build your own images</a>
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<a data-link href="../../../../../engine/userguide/networkingcontainers/" class=""> Networking containers</a>
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<a data-link href="../../../../../engine/userguide/dockervolumes/" class=""> Manage data in containers</a>
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<a data-link href="../../../../../engine/userguide/dockerrepos/" class=""> Store images on Docker Hub</a>
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</div>
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</article>
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<button data-control> Docker on Windows & OSX</button>
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<a data-link href="../../../../../engine/articles/dsc/" class=""> PowerShell DSC Usage</a>
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</article>
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<button data-control> Use the Kitematic GUI</button>
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<a data-link href="../../../../../kitematic/userguide/" class=""> Kitematic User Guide: Intro & Overview</a>
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<a data-link href="../../../../../kitematic/nginx-web-server/" class=""> Set up an Nginx web server</a>
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<a data-link href="../../../../../kitematic/minecraft-server/" class=""> Set up a Minecraft Server</a>
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<a data-link href="../../../../../kitematic/rethinkdb-dev-database/" class=""> Creating a Local RethinkDB Database for Development</a>
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<a data-link href="../../../../../kitematic/faq/" class=""> Frequently Asked Questions</a>
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<a data-link href="../../../../../kitematic/known-issues/" class=""> Known Issues</a>
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</article>
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</div>
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</section>
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<button data-control> Use Docker</button>
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<div data-content>
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<a data-link href="../../../../../engine/misc/" class=""> About Docker</a>
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<a data-link href="../../../../../engine/userguide/labels-custom-metadata/" class=""> Apply custom metadata</a>
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<a data-link href="../../../../../engine/misc/deprecated/" class=""> Docker Deprecated Features</a>
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<a data-link href="../../../../../engine/introduction/understanding-docker/" class=""> Understand the architecture</a>
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<article data-accordion>
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<button data-control> Provision & set up Docker hosts</button>
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<div data-content>
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<a data-link href="../../../../../machine/" class=""> Overview of Docker Machine</a>
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<a data-link href="../../../../../machine/get-started/" class=""> Get started with Docker Machine and a local VM</a>
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<a data-link href="../../../../../machine/get-started-cloud/" class=""> Using Docker Machine with a cloud provider</a>
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<a data-link href="../../../../../machine/migrate-to-machine/" class=""> Migrate from Boot2Docker to Docker Machine</a>
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</div>
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</article>
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<article data-accordion>
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<button data-control> Create multi-container applications</button>
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<div data-content>
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<a data-link href="../../../../../compose/" class=""> Overview of Docker Compose</a>
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<a data-link href="../../../../../compose/production/" class=""> Using Compose in production</a>
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<a data-link href="../../../../../compose/extends/" class=""> Extending services in Compose</a>
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<a data-link href="../../../../../compose/gettingstarted/" class=""> Getting Started</a>
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<a data-link href="../../../../../compose/django/" class=""> Quickstart Guide: Compose and Django</a>
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<a data-link href="../../../../../compose/rails/" class=""> Quickstart Guide: Compose and Rails</a>
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<a data-link href="../../../../../compose/networking/" class=""> Networking in Compose</a>
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<a data-link href="../../../../../compose/wordpress/" class=""> Quickstart Guide: Compose and WordPress</a>
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<a data-link href="../../../../../compose/completion/" class=""> Command-line Completion</a>
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</div>
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</article>
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<article data-accordion>
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<button data-control> Cluster Docker containers</button>
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<div data-content>
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<a data-link href="../../../../../swarm/" class=""> Docker Swarm</a>
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<a data-link href="../../../../../swarm/install-manual/" class=""> Create a swarm for development</a>
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<a data-link href="../../../../../swarm/multi-manager-setup/" class=""> High availability in Docker Swarm</a>
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<a data-link href="../../../../../swarm/networking/" class=""> Docker Swarm Networking</a>
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<a data-link href="../../../../../swarm/discovery/" class=""> Docker Swarm discovery</a>
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<a data-link href="../../../../../swarm/scheduler/filter/" class=""> Docker Swarm filters</a>
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<a data-link href="../../../../../swarm/scheduler/strategy/" class=""> Docker Swarm strategies</a>
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</div>
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</article>
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<article data-accordion>
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<button data-control> Administrate Docker</button>
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<div data-content>
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<a data-link href="../../../../../engine/articles/host_integration/" class=""> Automatically start containers</a>
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<a data-link href="../../../../../engine/articles/security/" class=""> Docker security</a>
|
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<a data-link href="../../../../../engine/articles/configuring/" class=""> Configuring and running Docker</a>
|
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<a data-link href="../../../../../engine/articles/runmetrics/" class=""> Runtime metrics</a>
|
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<a data-link href="../../../../../engine/articles/https/" class=""> Protect the Docker daemon socket</a>
|
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|
<a data-link href="../../../../../engine/articles/ambassador_pattern_linking/" class=""> Link via an ambassador container</a>
|
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|
<a data-link href="../../../../../engine/articles/systemd/" class=""> Control and configure Docker with systemd</a>
|
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<article data-accordion>
|
|
<button data-control> Logging</button>
|
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<div data-content>
|
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|
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<a data-link href="../../../../../engine/reference/logging/overview/" class=""> Configuring Logging Drivers</a>
|
|
|
|
<a data-link href="../../../../../engine/reference/logging/awslogs/" class=""> Amazon CloudWatch Logs logging driver</a>
|
|
|
|
<a data-link href="../../../../../engine/reference/logging/log_tags/" class=""> Log tags for logging driver</a>
|
|
|
|
<a data-link href="../../../../../engine/reference/logging/fluentd/" class=""> Fluentd logging driver</a>
|
|
|
|
<a data-link href="../../../../../engine/reference/logging/splunk/" class=""> Splunk logging driver</a>
|
|
|
|
<a data-link href="../../../../../engine/reference/logging/journald/" class=""> journald logging driver</a>
|
|
|
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</div>
|
|
</article>
|
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<article data-accordion>
|
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<button data-control> Applications and Services</button>
|
|
<div data-content>
|
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|
|
<a data-link href="../../../../../engine/examples/running_riak_service/" class=""> Dockerizing a Riak service</a>
|
|
|
|
<a data-link href="../../../../../engine/examples/running_ssh_service/" class=""> Dockerizing an SSH service</a>
|
|
|
|
</div>
|
|
</article>
|
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<article data-accordion>
|
|
<button data-control> Integrate with Third-party Tools</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../engine/articles/cfengine_process_management/" class=""> Process management with CFEngine</a>
|
|
|
|
<a data-link href="../../../../../engine/articles/chef/" class=""> Using Chef</a>
|
|
|
|
<a data-link href="../../../../../engine/articles/puppet/" class=""> Using Puppet</a>
|
|
|
|
<a data-link href="../../../../../engine/articles/using_supervisord/" class=""> Using Supervisor with Docker</a>
|
|
|
|
</div>
|
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</article>
|
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</div>
|
|
</article>
|
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<article data-accordion>
|
|
<button data-control> Docker storage drivers</button>
|
|
<div data-content>
|
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|
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<a data-link href="../../../../../engine/userguide/storagedriver/imagesandcontainers/" class=""> Understand images, containers, and storage drivers</a>
|
|
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<a data-link href="../../../../../engine/userguide/storagedriver/selectadriver/" class=""> Select a storage driver</a>
|
|
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|
|
<a data-link href="../../../../../engine/userguide/storagedriver/aufs-driver/" class=""> AUFS storage driver in practice</a>
|
|
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|
|
<a data-link href="../../../../../engine/userguide/storagedriver/btrfs-driver/" class=""> BTRFS storage in practice</a>
|
|
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|
|
<a data-link href="../../../../../engine/userguide/storagedriver/device-mapper-driver/" class=""> Device mapper storage in practice</a>
|
|
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|
|
<a data-link href="../../../../../engine/userguide/storagedriver/overlayfs-driver/" class=""> OverlayFS storage in practice</a>
|
|
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|
|
<a data-link href="../../../../../engine/userguide/storagedriver/zfs-driver/" class=""> ZFS storage in practice</a>
|
|
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|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
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|
|
<article data-accordion>
|
|
<button data-control> Network configuration</button>
|
|
<div data-content>
|
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|
|
<a data-link href="../../../../../engine/userguide/networking/dockernetworks/" class=""> Docker container networking</a>
|
|
|
|
|
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|
|
<a data-link href="../../../../../engine/userguide/networking/work-with-networks/" class=""> Work with network commands</a>
|
|
|
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|
|
|
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|
|
<a data-link href="../../../../../engine/userguide/networking/get-started-overlay/" class=""> Get started with multi-host networking</a>
|
|
|
|
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|
|
<article data-accordion>
|
|
<button data-control> Default bridge network</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/dockerlinks/" class=" active"> Legacy container links</a>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/binding/" class=""> Bind container ports to the host</a>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/build-bridges/" class=""> Build your own bridge</a>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/configure-dns/" class=""> Configure container DNS</a>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/custom-docker0/" class=""> Customize the docker0 bridge</a>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/container-communication/" class=""> Understand container communication</a>
|
|
|
|
<a data-link href="../../../../../engine/userguide/networking/default_network/ipv6/" class=""> IPv6 with Docker</a>
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Applied Docker</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../engine/examples/mongodb/" class=""> Dockerizing MongoDB</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/examples/postgresql_service/" class=""> Dockerizing PostgreSQL</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/examples/couchdb_data_volumes/" class=""> Dockerizing a CouchDB service</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/examples/nodejs_web_app/" class=""> Dockerizing a Node.js web app</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/examples/running_redis_service/" class=""> Dockerizing a Redis service</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/examples/apt-cacher-ng/" class=""> Dockerizing an apt-cacher-ng service</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
<section data-accordion>
|
|
|
|
<article data-accordion>
|
|
<button data-control> Manage image repositories</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../engine/userguide/image_management/" class=""> Image management</a>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docker Hub</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/" class=""> Introducing Docker Hub</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/accounts/" class=""> Your Docker Hub account</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/repos/" class=""> Repositories on Docker Hub</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/builds/" class=""> Automated Builds on Docker Hub</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/github/" class=""> Automated Builds from GitHub</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/bitbucket/" class=""> Automated Builds with Bitbucket</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/orgs/" class=""> Teams & Organizations</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-hub/official_repos/" class=""> Official Repositories on Docker Hub</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docker Trusted Registry</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/" class=""> Overview</a>
|
|
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Trusted Registry installation overview</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/install/dtr-ami-byol-launch/" class=""> Install Docker Subscription for AWS (BYOL))</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/install/engine-ami-launch/" class=""> Install Docker Engine for AWS AMI (BDS)</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/install/dtr-ami-bds-launch/" class=""> Install Trusted Registry for AWS AMI (BDS)</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/install/install-csengine/" class=""> Manually Install the CS Docker Engine</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/install/install-dtr/" class=""> Manually install Trusted Registry</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/install/upgrade/" class=""> Upgrade Trusted Registry and CS Engine</a>
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/quick-start/" class=""> Quick-start: Basic Workflow</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/userguide/" class=""> User guide</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/adminguide/" class=""> Admin guide</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/configuration/" class=""> Configuration options</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/license/" class=""> Trusted Registry License</a>
|
|
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> DTR APIs</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/" class=""> Docker Trusted Registry Accounts & Repos API: Intro & Overview</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_1_3_accounts/" class=""> Docker Trusted Registry Accounts API</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_1_3_teams/" class=""> Docker Trusted Registry User and Org API</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_1_3_repositories/" class=""> Docker Trusted Registry Repository API</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_1_3_user_repo_access/" class=""> Docker Trusted Registry User Repository API</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_1_3_team_repo_access/" class=""> Docker Trusted Registry Org Repository API</a>
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_1_3_team_repo_namespace_access/" class=""> Docker Trusted Registry Org Namespace API</a>
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/support/" class=""> Support</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/release-notes/" class=""> Release notes</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../docker-trusted-registry/prior-release-notes/" class=""> Prior release notes archive</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docker Registry</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../registry/" class=""> Docker Registry</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/introduction/" class=""> Understanding the Registry</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/deploying/" class=""> Deploying a registry server</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/configuration/" class=""> Configuring a registry</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/notifications/" class=""> Working with notifications</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/help/" class=""> Getting help</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Use trusted images</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../engine/security/trust/content_trust/" class=""> Content trust in Docker</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/security/trust/trust_automation/" class=""> Automation with content trust</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/security/trust/trust_key_mng/" class=""> Manage keys for content trust</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/security/trust/trust_sandbox/" class=""> Play in a content trust sandbox</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/articles/certificates/" class=""> Using certificates for repository client verification</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/articles/registry_mirror/" class=""> Run a local registry mirror</a>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
<section data-accordion>
|
|
|
|
<article data-accordion>
|
|
<button data-control> Extend Docker</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../engine/extend/plugins_network/" class=""> Docker network driver plugins</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/extend/plugins/" class=""> Extending Docker with plugins</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/extend/plugins_volume/" class=""> Volume plugins</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/extend/plugin_api/" class=""> Plugins API</a>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
<section data-accordion>
|
|
|
|
<article data-accordion>
|
|
<button data-control> Command and API references</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/run/" class=""> Docker run reference</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/builder/" class=""> Dockerfile reference</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/api/remote_api_client_libraries/" class=""> Remote API client libraries</a>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Using the command line</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/cli/" class=""> Use the Docker command line</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/daemon/" class=""> daemon</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/attach/" class=""> attach</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/build/" class=""> build</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/commit/" class=""> commit</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/cp/" class=""> cp</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/create/" class=""> create</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/diff/" class=""> diff</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/events/" class=""> events</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/exec/" class=""> exec</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/export/" class=""> export</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/history/" class=""> history</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/images/" class=""> images</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/import/" class=""> import</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/info/" class=""> info</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/inspect/" class=""> inspect</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/kill/" class=""> kill</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/load/" class=""> load</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/login/" class=""> login</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/logout/" class=""> logout</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/logs/" class=""> logs</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/network_connect/" class=""> network connect</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/network_create/" class=""> network create</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/network_disconnect/" class=""> network disconnect</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/network_inspect/" class=""> network inspect</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/network_ls/" class=""> network ls</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/network_rm/" class=""> network rm</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/pause/" class=""> pause</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/commandline/port/" class=""> port</a>
|
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|
|
<a data-link href="../../../../../engine/reference/commandline/ps/" class=""> ps</a>
|
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<a data-link href="../../../../../engine/reference/commandline/pull/" class=""> pull</a>
|
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<a data-link href="../../../../../engine/reference/commandline/push/" class=""> push</a>
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<a data-link href="../../../../../engine/reference/commandline/rename/" class=""> rename</a>
|
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<a data-link href="../../../../../engine/reference/commandline/restart/" class=""> restart</a>
|
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<a data-link href="../../../../../engine/reference/commandline/rm/" class=""> rm</a>
|
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<a data-link href="../../../../../engine/reference/commandline/rmi/" class=""> rmi</a>
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<a data-link href="../../../../../engine/reference/commandline/run/" class=""> run</a>
|
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<a data-link href="../../../../../engine/reference/commandline/save/" class=""> save</a>
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<a data-link href="../../../../../engine/reference/commandline/search/" class=""> search</a>
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<a data-link href="../../../../../engine/reference/commandline/start/" class=""> start</a>
|
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<a data-link href="../../../../../engine/reference/commandline/stats/" class=""> stats</a>
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<a data-link href="../../../../../engine/reference/commandline/stop/" class=""> stop</a>
|
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<a data-link href="../../../../../engine/reference/commandline/tag/" class=""> tag</a>
|
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<a data-link href="../../../../../engine/reference/commandline/top/" class=""> top</a>
|
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<a data-link href="../../../../../engine/reference/commandline/unpause/" class=""> unpause</a>
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<a data-link href="../../../../../engine/reference/commandline/version/" class=""> version</a>
|
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<a data-link href="../../../../../engine/reference/commandline/volume_create/" class=""> volume create</a>
|
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|
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<a data-link href="../../../../../engine/reference/commandline/volume_inspect/" class=""> volume inspect</a>
|
|
|
|
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|
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|
<a data-link href="../../../../../engine/reference/commandline/volume_ls/" class=""> volume ls</a>
|
|
|
|
|
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|
<a data-link href="../../../../../engine/reference/commandline/volume_rm/" class=""> volume rm</a>
|
|
|
|
|
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|
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|
|
<a data-link href="../../../../../engine/reference/commandline/wait/" class=""> wait</a>
|
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|
|
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|
|
</div>
|
|
</article>
|
|
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|
|
<a data-link href="../../../../../engine/reference/api/docker_io_accounts_api/" class=""> docker.io accounts API</a>
|
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|
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<article data-accordion>
|
|
<button data-control> Docker Remote API</button>
|
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<div data-content>
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<a data-link href="../../../../../engine/reference/api/docker_remote_api/" class=""> Remote API</a>
|
|
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|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.21/" class=""> Remote API v1.21</a>
|
|
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|
|
|
|
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|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.20/" class=""> Remote API v1.20</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.19/" class=""> Remote API v1.19</a>
|
|
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|
|
|
|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.18/" class=""> Remote API v1.18</a>
|
|
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|
|
|
|
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|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.17/" class=""> Remote API v1.17</a>
|
|
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|
|
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|
|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.16/" class=""> Remote API v1.16</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.15/" class=""> Remote API v1.15</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/api/docker_remote_api_v1.14/" class=""> Remote API v1.14</a>
|
|
|
|
|
|
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|
|
|
<a data-link href="../../../../../engine/reference/api/docker-io_api/" class=""> Docker Hub API</a>
|
|
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|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
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|
|
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<article data-accordion>
|
|
<button data-control> Docker Hub</button>
|
|
<div data-content>
|
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<a data-link href="../../../../../engine/reference/api/hub_registry_spec/" class=""> The Docker Hub and the Registry v1</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
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|
|
|
<a data-link href="../../../../../docker-trusted-registry/api/dtr_api/" class=""> Docker Trusted Registry</a>
|
|
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|
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<article data-accordion>
|
|
<button data-control> Docker Compose Reference</button>
|
|
<div data-content>
|
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|
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<article data-accordion>
|
|
<button data-control> Compose CLI reference</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../compose/reference/overview/" class=""> Introduction to the CLI</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/docker-compose/" class=""> docker-compose</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/build/" class=""> build</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/help/" class=""> help</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/kill/" class=""> kill</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/logs/" class=""> logs</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/pause/" class=""> pause</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/port/" class=""> port</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/ps/" class=""> ps</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/pull/" class=""> pull</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/restart/" class=""> restart</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/rm/" class=""> rm</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/run/" class=""> run</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/scale/" class=""> scale</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/start/" class=""> start</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/stop/" class=""> stop</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/unpause/" class=""> unpause</a>
|
|
|
|
<a data-link href="../../../../../compose/reference/up/" class=""> up</a>
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../compose/compose-file/" class=""> Compose file reference</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../compose/env/" class=""> Compose environment variables reference</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docker Machine Reference</button>
|
|
<div data-content>
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Drivers</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../machine/drivers/os-base/" class=""> Driver options and operating system defaults</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/aws/" class=""> Amazon Web Services</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/digital-ocean/" class=""> Digital Ocean</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/generic/" class=""> Generic</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/gce/" class=""> Google Compute Engine</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/soft-layer/" class=""> IBM Softlayer</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/azure/" class=""> Microsoft Azure</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/hyper-v/" class=""> Microsoft Hyper-V</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/openstack/" class=""> OpenStack</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/virtualbox/" class=""> Oracle VirtualBox</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/rackspace/" class=""> Rackspace</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/vm-fusion/" class=""> VMware Fusion</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/vm-cloud/" class=""> VMware vCloud Air</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/vsphere/" class=""> VMware vSphere</a>
|
|
|
|
<a data-link href="../../../../../machine/drivers/exoscale/" class=""> exoscale</a>
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Subcommands</button>
|
|
<div data-content>
|
|
|
|
<a data-link href="../../../../../machine/reference/active/" class=""> active</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/config/" class=""> config</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/create/" class=""> create</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/env/" class=""> env</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/help/" class=""> help</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/inspect/" class=""> inspect</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/ip/" class=""> ip</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/kill/" class=""> kill</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/ls/" class=""> ls</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/regenerate-certs/" class=""> regenerate-certs</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/restart/" class=""> restart</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/rm/" class=""> rm</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/scp/" class=""> scp</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/ssh/" class=""> ssh</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/start/" class=""> start</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/status/" class=""> status</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/stop/" class=""> stop</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/upgrade/" class=""> upgrade</a>
|
|
|
|
<a data-link href="../../../../../machine/reference/url/" class=""> url</a>
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docker Swarm Reference</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../swarm/api/swarm-api/" class=""> Docker Swarm API</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docker Registry Reference</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../registry/spec/api/" class=""> HTTP API V2</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/storagedrivers/" class=""> Storage Drivers</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/spec/auth/jwt/" class=""> Token Authentication Implementation</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../registry/spec/auth/token/" class=""> Token Authentication Specification</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
<section data-accordion>
|
|
|
|
<article data-accordion>
|
|
<button data-control> Open Source at Docker</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../opensource/code/" class=""> Quickstart contribution</a>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Set up for Engine Development</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../opensource/project/who-written-for/" class=""> README first</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/project/software-required/" class=""> Get the required software</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/project/software-req-win/" class=""> Set up for development on Windows</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/project/set-up-git/" class=""> Configure Git for contributing</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/project/set-up-dev-env/" class=""> Work with a development container</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/project/test-and-docs/" class=""> Run tests and test documentation</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Contribution workflow</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/make-a-contribution/" class=""> Understand how to contribute</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/find-an-issue/" class=""> Find and claim an issue</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/work-issue/" class=""> Work on your issue</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/create-pr/" class=""> Create a pull request (PR)</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/review-pr/" class=""> Participate in the PR review</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/advanced-contributing/" class=""> Advanced contributing</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/workflow/coding-style/" class=""> Coding style checklist</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Other ways to contribute</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../opensource/ways/meetups/" class=""> Organize a Docker Meetup</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/ways/issues/" class=""> Organize our issues</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/ways/community/" class=""> Support the community</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/ways/test/" class=""> Testing contributions</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<article data-accordion>
|
|
<button data-control> Governance</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../opensource/governance/dgab-info/" class=""> Docker Governance Advisory Board</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/governance/board-profiles/" class=""> Board member profiles</a>
|
|
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/governance/conduct-code/" class=""> Code of conduct</a>
|
|
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/FAQ/" class=""> FAQ for contributors</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/get-help/" class=""> Where to chat or get help</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../opensource/doc-style/" class=""> Style guide for Docker documentation</a>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
<section data-accordion>
|
|
|
|
<article data-accordion>
|
|
<button data-control> About</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="../../../../../release-notes/" class=""> Docker Release Notes</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/misc/faq/" class=""> FAQ</a>
|
|
|
|
|
|
|
|
<a data-link href="../../../../../engine/reference/glossary/" class=""> Docker Glossary</a>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
<section data-accordion>
|
|
|
|
<article data-accordion>
|
|
<button data-control> Docs archive</button>
|
|
<div data-content>
|
|
|
|
|
|
<a data-link href="http://docs.docker.com/v1.7/" class=""> Version 1.7</a>
|
|
|
|
|
|
|
|
<a data-link href="http://docs.docker.com/v1.6/" class=""> Version 1.6</a>
|
|
|
|
|
|
|
|
<a data-link href="http://docs.docker.com/v1.5/" class=""> Version 1.5</a>
|
|
|
|
|
|
|
|
<a data-link href="http://docs.docker.com/v1.4/" class=""> Version 1.4</a>
|
|
|
|
|
|
</div>
|
|
</article>
|
|
|
|
</section>
|
|
|
|
</section>
|
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<script>
|
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$(document).ready(function () {
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var $activeLink = $('#multiple [data-link].active');
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</div>
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<div class="large-6 columns">
|
|
<section id="main">
|
|
<article id="content">
|
|
|
|
|
|
<h1 id="legacy-container-links">Legacy container links</h1>
|
|
|
|
<p>The information in this section explains legacy container links within the Docker default bridge. This is a <code>bridge</code> network named <code>bridge</code> created automatically when you install Docker.</p>
|
|
|
|
<p>Before the <a href="../../../../../engine/userguide/networking/dockernetworks/">Docker networks feature</a>, you could use the
|
|
Docker link feature to allow containers to discover each other and securely
|
|
transfer information about one container to another container. With the
|
|
introduction of the Docker networks feature, you can still create links but they
|
|
are only supported on the default <code>bridge</code> network named <code>bridge</code> and appearing
|
|
in your network stack as <code>docker0</code>.</p>
|
|
|
|
<p>This section briefly discuss connecting via a network port and then goes into
|
|
detail on container linking. While links are still supported on Docker’s default
|
|
network (<code>bridge bridge</code>), you should avoid them in preference of the Docker
|
|
networks feature. Linking is expected to be deprecated and removed in a future
|
|
release.</p>
|
|
|
|
<h2 id="connect-using-network-port-mapping">Connect using network port mapping</h2>
|
|
|
|
<p>In <a href="../../../../../engine/userguide/usingdocker/">the Using Docker section</a>, you created a
|
|
container that ran a Python Flask application:</p>
|
|
|
|
<pre><code>$ docker run -d -P training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<blockquote>
|
|
<p><strong>Note:</strong>
|
|
Containers have an internal network and an IP address
|
|
(as we saw when we used the <code>docker inspect</code> command to show the container’s
|
|
IP address in the <a href="../../../../../engine/userguide/usingdocker/">Using Docker</a> section).
|
|
Docker can have a variety of network configurations. You can see more
|
|
information on Docker networking <a href="../../../../../engine/userguide/networking/">here</a>.</p>
|
|
</blockquote>
|
|
|
|
<p>When that container was created, the <code>-P</code> flag was used to automatically map
|
|
any network port inside it to a random high port within an <em>ephemeral port
|
|
range</em> on your Docker host. Next, when <code>docker ps</code> was run, you saw that port
|
|
5000 in the container was bound to port 49155 on the host.</p>
|
|
|
|
<pre><code>$ docker ps nostalgic_morse
|
|
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
|
|
bc533791f3f5 training/webapp:latest python app.py 5 seconds ago Up 2 seconds 0.0.0.0:49155->5000/tcp nostalgic_morse
|
|
</code></pre>
|
|
|
|
<p>You also saw how you can bind a container’s ports to a specific port using
|
|
the <code>-p</code> flag. Here port 80 of the host is mapped to port 5000 of the
|
|
container:</p>
|
|
|
|
<pre><code>$ docker run -d -p 80:5000 training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>And you saw why this isn’t such a great idea because it constrains you to
|
|
only one container on that specific port.</p>
|
|
|
|
<p>Instead, you may specify a range of host ports to bind a container port to
|
|
that is different than the default <em>ephemeral port range</em>:</p>
|
|
|
|
<pre><code>$ docker run -d -p 8000-9000:5000 training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>This would bind port 5000 in the container to a randomly available port
|
|
between 8000 and 9000 on the host.</p>
|
|
|
|
<p>There are also a few other ways you can configure the <code>-p</code> flag. By
|
|
default the <code>-p</code> flag will bind the specified port to all interfaces on
|
|
the host machine. But you can also specify a binding to a specific
|
|
interface, for example only to the <code>localhost</code>.</p>
|
|
|
|
<pre><code>$ docker run -d -p 127.0.0.1:80:5000 training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>This would bind port 5000 inside the container to port 80 on the
|
|
<code>localhost</code> or <code>127.0.0.1</code> interface on the host machine.</p>
|
|
|
|
<p>Or, to bind port 5000 of the container to a dynamic port but only on the
|
|
<code>localhost</code>, you could use:</p>
|
|
|
|
<pre><code>$ docker run -d -p 127.0.0.1::5000 training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>You can also bind UDP ports by adding a trailing <code>/udp</code>. For example:</p>
|
|
|
|
<pre><code>$ docker run -d -p 127.0.0.1:80:5000/udp training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>You also learned about the useful <code>docker port</code> shortcut which showed us the
|
|
current port bindings. This is also useful for showing you specific port
|
|
configurations. For example, if you’ve bound the container port to the
|
|
<code>localhost</code> on the host machine, then the <code>docker port</code> output will reflect that.</p>
|
|
|
|
<pre><code>$ docker port nostalgic_morse 5000
|
|
127.0.0.1:49155
|
|
</code></pre>
|
|
|
|
<blockquote>
|
|
<p><strong>Note:</strong>
|
|
The <code>-p</code> flag can be used multiple times to configure multiple ports.</p>
|
|
</blockquote>
|
|
|
|
<h2 id="connect-with-the-linking-system">Connect with the linking system</h2>
|
|
|
|
<p>Network port mappings are not the only way Docker containers can connect to one
|
|
another. Docker also has a linking system that allows you to link multiple
|
|
containers together and send connection information from one to another. When
|
|
containers are linked, information about a source container can be sent to a
|
|
recipient container. This allows the recipient to see selected data describing
|
|
aspects of the source container.</p>
|
|
|
|
<h3 id="the-importance-of-naming">The importance of naming</h3>
|
|
|
|
<p>To establish links, Docker relies on the names of your containers.
|
|
You’ve already seen that each container you create has an automatically
|
|
created name; indeed you’ve become familiar with our old friend
|
|
<code>nostalgic_morse</code> during this guide. You can also name containers
|
|
yourself. This naming provides two useful functions:</p>
|
|
|
|
<ol>
|
|
<li><p>It can be useful to name containers that do specific functions in a way
|
|
that makes it easier for you to remember them, for example naming a
|
|
container containing a web application <code>web</code>.</p></li>
|
|
|
|
<li><p>It provides Docker with a reference point that allows it to refer to other
|
|
containers, for example, you can specify to link the container <code>web</code> to container <code>db</code>.</p></li>
|
|
</ol>
|
|
|
|
<p>You can name your container by using the <code>--name</code> flag, for example:</p>
|
|
|
|
<pre><code>$ docker run -d -P --name web training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>This launches a new container and uses the <code>--name</code> flag to
|
|
name the container <code>web</code>. You can see the container’s name using the
|
|
<code>docker ps</code> command.</p>
|
|
|
|
<pre><code>$ docker ps -l
|
|
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
|
|
aed84ee21bde training/webapp:latest python app.py 12 hours ago Up 2 seconds 0.0.0.0:49154->5000/tcp web
|
|
</code></pre>
|
|
|
|
<p>You can also use <code>docker inspect</code> to return the container’s name.</p>
|
|
|
|
<blockquote>
|
|
<p><strong>Note:</strong>
|
|
Container names have to be unique. That means you can only call
|
|
one container <code>web</code>. If you want to re-use a container name you must delete
|
|
the old container (with <code>docker rm</code>) before you can create a new
|
|
container with the same name. As an alternative you can use the <code>--rm</code>
|
|
flag with the <code>docker run</code> command. This will delete the container
|
|
immediately after it is stopped.</p>
|
|
</blockquote>
|
|
|
|
<h2 id="communication-across-links">Communication across links</h2>
|
|
|
|
<p>Links allow containers to discover each other and securely transfer information
|
|
about one container to another container. When you set up a link, you create a
|
|
conduit between a source container and a recipient container. The recipient can
|
|
then access select data about the source. To create a link, you use the <code>--link</code>
|
|
flag. First, create a new container, this time one containing a database.</p>
|
|
|
|
<pre><code>$ docker run -d --name db training/postgres
|
|
</code></pre>
|
|
|
|
<p>This creates a new container called <code>db</code> from the <code>training/postgres</code>
|
|
image, which contains a PostgreSQL database.</p>
|
|
|
|
<p>Now, you need to delete the <code>web</code> container you created previously so you can replace it
|
|
with a linked one:</p>
|
|
|
|
<pre><code>$ docker rm -f web
|
|
</code></pre>
|
|
|
|
<p>Now, create a new <code>web</code> container and link it with your <code>db</code> container.</p>
|
|
|
|
<pre><code>$ docker run -d -P --name web --link db:db training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>This will link the new <code>web</code> container with the <code>db</code> container you created
|
|
earlier. The <code>--link</code> flag takes the form:</p>
|
|
|
|
<pre><code>--link <name or id>:alias
|
|
</code></pre>
|
|
|
|
<p>Where <code>name</code> is the name of the container we’re linking to and <code>alias</code> is an
|
|
alias for the link name. You’ll see how that alias gets used shortly.
|
|
The <code>--link</code> flag also takes the form:</p>
|
|
|
|
<pre><code>--link <name or id>
|
|
</code></pre>
|
|
|
|
<p>In which case the alias will match the name. You could have written the previous
|
|
example as:</p>
|
|
|
|
<pre><code>$ docker run -d -P --name web --link db training/webapp python app.py
|
|
</code></pre>
|
|
|
|
<p>Next, inspect your linked containers with <code>docker inspect</code>:</p>
|
|
|
|
<pre><code>$ docker inspect -f "{{ .HostConfig.Links }}" web
|
|
[/db:/web/db]
|
|
</code></pre>
|
|
|
|
<p>You can see that the <code>web</code> container is now linked to the <code>db</code> container
|
|
<code>web/db</code>. Which allows it to access information about the <code>db</code> container.</p>
|
|
|
|
<p>So what does linking the containers actually do? You’ve learned that a link allows a
|
|
source container to provide information about itself to a recipient container. In
|
|
our example, the recipient, <code>web</code>, can access information about the source <code>db</code>. To do
|
|
this, Docker creates a secure tunnel between the containers that doesn’t need to
|
|
expose any ports externally on the container; you’ll note when we started the
|
|
<code>db</code> container we did not use either the <code>-P</code> or <code>-p</code> flags. That’s a big benefit of
|
|
linking: we don’t need to expose the source container, here the PostgreSQL database, to
|
|
the network.</p>
|
|
|
|
<p>Docker exposes connectivity information for the source container to the
|
|
recipient container in two ways:</p>
|
|
|
|
<ul>
|
|
<li>Environment variables,</li>
|
|
<li>Updating the <code>/etc/hosts</code> file.</li>
|
|
</ul>
|
|
|
|
<h3 id="environment-variables">Environment variables</h3>
|
|
|
|
<p>Docker creates several environment variables when you link containers. Docker
|
|
automatically creates environment variables in the target container based on
|
|
the <code>--link</code> parameters. It will also expose all environment variables
|
|
originating from Docker from the source container. These include variables from:</p>
|
|
|
|
<ul>
|
|
<li>the <code>ENV</code> commands in the source container’s Dockerfile</li>
|
|
<li>the <code>-e</code>, <code>--env</code> and <code>--env-file</code> options on the <code>docker run</code>
|
|
command when the source container is started</li>
|
|
</ul>
|
|
|
|
<p>These environment variables enable programmatic discovery from within the
|
|
target container of information related to the source container.</p>
|
|
|
|
<blockquote>
|
|
<p><strong>Warning</strong>:
|
|
It is important to understand that <em>all</em> environment variables originating
|
|
from Docker within a container are made available to <em>any</em> container
|
|
that links to it. This could have serious security implications if sensitive
|
|
data is stored in them.</p>
|
|
</blockquote>
|
|
|
|
<p>Docker sets an <code><alias>_NAME</code> environment variable for each target container
|
|
listed in the <code>--link</code> parameter. For example, if a new container called
|
|
<code>web</code> is linked to a database container called <code>db</code> via <code>--link db:webdb</code>,
|
|
then Docker creates a <code>WEBDB_NAME=/web/webdb</code> variable in the <code>web</code> container.</p>
|
|
|
|
<p>Docker also defines a set of environment variables for each port exposed by the
|
|
source container. Each variable has a unique prefix in the form:</p>
|
|
|
|
<p><code><name>_PORT_<port>_<protocol></code></p>
|
|
|
|
<p>The components in this prefix are:</p>
|
|
|
|
<ul>
|
|
<li>the alias <code><name></code> specified in the <code>--link</code> parameter (for example, <code>webdb</code>)</li>
|
|
<li>the <code><port></code> number exposed</li>
|
|
<li>a <code><protocol></code> which is either TCP or UDP</li>
|
|
</ul>
|
|
|
|
<p>Docker uses this prefix format to define three distinct environment variables:</p>
|
|
|
|
<ul>
|
|
<li>The <code>prefix_ADDR</code> variable contains the IP Address from the URL, for
|
|
example <code>WEBDB_PORT_5432_TCP_ADDR=172.17.0.82</code>.</li>
|
|
<li>The <code>prefix_PORT</code> variable contains just the port number from the URL for
|
|
example <code>WEBDB_PORT_5432_TCP_PORT=5432</code>.</li>
|
|
<li>The <code>prefix_PROTO</code> variable contains just the protocol from the URL for
|
|
example <code>WEBDB_PORT_5432_TCP_PROTO=tcp</code>.</li>
|
|
</ul>
|
|
|
|
<p>If the container exposes multiple ports, an environment variable set is
|
|
defined for each one. This means, for example, if a container exposes 4 ports
|
|
that Docker creates 12 environment variables, 3 for each port.</p>
|
|
|
|
<p>Additionally, Docker creates an environment variable called <code><alias>_PORT</code>.
|
|
This variable contains the URL of the source container’s first exposed port.
|
|
The ‘first’ port is defined as the exposed port with the lowest number.
|
|
For example, consider the <code>WEBDB_PORT=tcp://172.17.0.82:5432</code> variable. If
|
|
that port is used for both tcp and udp, then the tcp one is specified.</p>
|
|
|
|
<p>Finally, Docker also exposes each Docker originated environment variable
|
|
from the source container as an environment variable in the target. For each
|
|
variable Docker creates an <code><alias>_ENV_<name></code> variable in the target
|
|
container. The variable’s value is set to the value Docker used when it
|
|
started the source container.</p>
|
|
|
|
<p>Returning back to our database example, you can run the <code>env</code>
|
|
command to list the specified container’s environment variables.</p>
|
|
|
|
<pre><code> $ docker run --rm --name web2 --link db:db training/webapp env
|
|
. . .
|
|
DB_NAME=/web2/db
|
|
DB_PORT=tcp://172.17.0.5:5432
|
|
DB_PORT_5432_TCP=tcp://172.17.0.5:5432
|
|
DB_PORT_5432_TCP_PROTO=tcp
|
|
DB_PORT_5432_TCP_PORT=5432
|
|
DB_PORT_5432_TCP_ADDR=172.17.0.5
|
|
. . .
|
|
</code></pre>
|
|
|
|
<p>You can see that Docker has created a series of environment variables with
|
|
useful information about the source <code>db</code> container. Each variable is prefixed
|
|
with
|
|
<code>DB_</code>, which is populated from the <code>alias</code> you specified above. If the <code>alias</code>
|
|
were <code>db1</code>, the variables would be prefixed with <code>DB1_</code>. You can use these
|
|
environment variables to configure your applications to connect to the database
|
|
on the <code>db</code> container. The connection will be secure and private; only the
|
|
linked <code>web</code> container will be able to talk to the <code>db</code> container.</p>
|
|
|
|
<h3 id="important-notes-on-docker-environment-variables">Important notes on Docker environment variables</h3>
|
|
|
|
<p>Unlike host entries in the <a href="#updating-the-etchosts-file"><code>/etc/hosts</code> file</a>,
|
|
IP addresses stored in the environment variables are not automatically updated
|
|
if the source container is restarted. We recommend using the host entries in
|
|
<code>/etc/hosts</code> to resolve the IP address of linked containers.</p>
|
|
|
|
<p>These environment variables are only set for the first process in the
|
|
container. Some daemons, such as <code>sshd</code>, will scrub them when spawning shells
|
|
for connection.</p>
|
|
|
|
<h3 id="updating-the-etc-hosts-file">Updating the <code>/etc/hosts</code> file</h3>
|
|
|
|
<p>In addition to the environment variables, Docker adds a host entry for the
|
|
source container to the <code>/etc/hosts</code> file. Here’s an entry for the <code>web</code>
|
|
container:</p>
|
|
|
|
<pre><code>$ docker run -t -i --rm --link db:webdb training/webapp /bin/bash
|
|
root@aed84ee21bde:/opt/webapp# cat /etc/hosts
|
|
172.17.0.7 aed84ee21bde
|
|
. . .
|
|
172.17.0.5 webdb 6e5cdeb2d300 db
|
|
</code></pre>
|
|
|
|
<p>You can see two relevant host entries. The first is an entry for the <code>web</code>
|
|
container that uses the Container ID as a host name. The second entry uses the
|
|
link alias to reference the IP address of the <code>db</code> container. In addition to
|
|
the alias you provide, the linked container’s name–if unique from the alias
|
|
provided to the <code>--link</code> parameter–and the linked container’s hostname will
|
|
also be added in <code>/etc/hosts</code> for the linked container’s IP address. You can ping
|
|
that host now via any of these entries:</p>
|
|
|
|
<pre><code>root@aed84ee21bde:/opt/webapp# apt-get install -yqq inetutils-ping
|
|
root@aed84ee21bde:/opt/webapp# ping webdb
|
|
PING webdb (172.17.0.5): 48 data bytes
|
|
56 bytes from 172.17.0.5: icmp_seq=0 ttl=64 time=0.267 ms
|
|
56 bytes from 172.17.0.5: icmp_seq=1 ttl=64 time=0.250 ms
|
|
56 bytes from 172.17.0.5: icmp_seq=2 ttl=64 time=0.256 ms
|
|
</code></pre>
|
|
|
|
<blockquote>
|
|
<p><strong>Note:</strong>
|
|
In the example, you’ll note you had to install <code>ping</code> because it was not included
|
|
in the container initially.</p>
|
|
</blockquote>
|
|
|
|
<p>Here, you used the <code>ping</code> command to ping the <code>db</code> container using its host entry,
|
|
which resolves to <code>172.17.0.5</code>. You can use this host entry to configure an application
|
|
to make use of your <code>db</code> container.</p>
|
|
|
|
<blockquote>
|
|
<p><strong>Note:</strong>
|
|
You can link multiple recipient containers to a single source. For
|
|
example, you could have multiple (differently named) web containers attached to your
|
|
<code>db</code> container.</p>
|
|
</blockquote>
|
|
|
|
<p>If you restart the source container, the linked containers <code>/etc/hosts</code> files
|
|
will be automatically updated with the source container’s new IP address,
|
|
allowing linked communication to continue.</p>
|
|
|
|
<pre><code>$ docker restart db
|
|
db
|
|
$ docker run -t -i --rm --link db:db training/webapp /bin/bash
|
|
root@aed84ee21bde:/opt/webapp# cat /etc/hosts
|
|
172.17.0.7 aed84ee21bde
|
|
. . .
|
|
172.17.0.9 db
|
|
</code></pre>
|
|
|
|
<h1 id="related-information">Related information</h1>
|
|
|
|
</article>
|
|
</section>
|
|
</div>
|
|
<div id="toc" class="large-3 columns toc ">
|
|
On this page:
|
|
<nav id="TableOfContents">
|
|
<ul>
|
|
<li><a href="#legacy-container-links">Legacy container links</a>
|
|
<ul>
|
|
<li><a href="#connect-using-network-port-mapping">Connect using network port mapping</a></li>
|
|
<li><a href="#connect-with-the-linking-system">Connect with the linking system</a>
|
|
<ul>
|
|
<li><a href="#the-importance-of-naming">The importance of naming</a></li>
|
|
</ul></li>
|
|
<li><a href="#communication-across-links">Communication across links</a>
|
|
<ul>
|
|
<li><a href="#environment-variables">Environment variables</a></li>
|
|
<li><a href="#important-notes-on-docker-environment-variables">Important notes on Docker environment variables</a></li>
|
|
<li><a href="#updating-the-etc-hosts-file">Updating the <code>/etc/hosts</code> file</a></li>
|
|
</ul></li>
|
|
</ul></li>
|
|
<li><a href="#related-information">Related information</a></li>
|
|
</ul>
|
|
</nav>
|
|
</div>
|
|
</div>
|
|
|
|
<footer class="main-footer">
|
|
<div class="row">
|
|
</div>
|
|
<div class="row">
|
|
</div>
|
|
<div id="buildinfo">
|
|
Nov 3, 2015 at 7:59pm (PST)
|
|
{
|
|
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|
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"ref": "docs",
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"git@github.com:docker/compose.git"
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"sha": "9c8173dbfda93baef214359991b6a8a54172f6ae"
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"docker/docker-hub": {
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"ref": "master",
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"git@github.com:docker/hub2-demo.git"
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],
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"sha": "4b2e522c81c860d63b126342a6b981ac0ff1605c"
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"git@github.com:docker/dhe-deploy.git"
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"sha": "b8988465878952f2e2c2472e8fc5fd35e5975fbf"
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},
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"docker/docs-base": {
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"ref": "hugo-github-linking",
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"repos": [
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"git@github.com:docker/docs-base.git"
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],
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"sha": "dc98c0381a6cc311c9e3189dc78a3c7e62e5a205"
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"docker/engine": {
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"git@github.com:docker/docker.git"
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"sha": "474b16af8ecfe94ec635dfac60025348d3186aa3"
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"sha": "786437901c0c883ecb59c1e0531654c1d89b326d"
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"docker/opensource": {
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"git@github.com:docker/opensource.git"
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"sha": "0cd99bcdd876ca0293d8944980c79f32064b6354"
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"sha": "a9da0e510032314910b5405acc50873ab2fa2e5a"
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"docker/swarm": {
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"ref": "master",
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"git@github.com:docker/swarm.git"
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"sha": "087e2452f3ec474f112b4e5b8c52b8dacb5751be"
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"docker/tutorials": {
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"ref": "master",
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"docs.docker.com": {
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"git@github.com:moxiegirl/docs.docker.com.git",
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"git@github.com:docker/docs.docker.com.git"
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"sha": "5878eae5de6f012c67a2a4772327c9948274c351"
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}
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} </div>
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</footer>
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<link rel="stylesheet" href="../../../../../highlight/styles/github.css">
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<script src="../../../../../highlight/highlight.pack.js"></script>
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<script>hljs.initHighlightingOnLoad();</script>
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<script src="../../../../../dist/assets/js/all.js"></script>
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<script>
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$( 'nav li:has(ul)' ).doubleTapToGo();
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<script>
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;(function ( $, window, document, undefined ) {
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var pluginName = 'accordion',
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defaults = {
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transitionSpeed: 300,
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transitionEasing: 'ease',
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controlElement: '[data-control]',
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contentElement: '[data-content]',
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groupElement: '[data-accordion-group]',
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singleOpen: true
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function Accordion(element, options) {
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this.element = element;
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this.options = $.extend({}, defaults, options);
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this._defaults = defaults;
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this.init();
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opts = self.options;
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$content = $accordion.find('> ' + opts.contentElement);
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var accordionParentsQty = $accordion.parents('[data-accordion]').length,
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accordionHasParent = accordionParentsQty > 0;
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var closedCSS = { 'max-height': 0, 'overflow': 'hidden' };
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var CSStransitions = supportsTransitions();
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function debounce(func, threshold, execAsap) {
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var timeout;
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return function debounced() {
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var obj = this,
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args = arguments;
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function delayed() {
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if (!execAsap) func.apply(obj, args);
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timeout = null;
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};
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if (timeout) clearTimeout(timeout);
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else if (execAsap) func.apply(obj, args);
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timeout = setTimeout(delayed, threshold || 100);
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};
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function supportsTransitions() {
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var b = document.body || document.documentElement,
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s = b.style,
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p = 'transition';
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if (typeof s[p] == 'string') {
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return true;
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}
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var v = ['Moz', 'webkit', 'Webkit', 'Khtml', 'O', 'ms'];
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p = 'Transition';
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for (var i=0; i<v.length; i++) {
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if (typeof s[v[i] + p] == 'string') {
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return true;
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}
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}
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return false;
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}
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function requestAnimFrame(cb) {
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if(window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame) {
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return requestAnimationFrame(cb) ||
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webkitRequestAnimationFrame(cb) ||
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mozRequestAnimationFrame(cb);
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} else {
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return setTimeout(cb, 1000 / 60);
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}
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}
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function toggleTransition($el, remove) {
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if(!remove) {
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$content.css({
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'-webkit-transition': 'max-height ' + opts.transitionSpeed + 'ms ' + opts.transitionEasing,
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'transition': 'max-height ' + opts.transitionSpeed + 'ms ' + opts.transitionEasing
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});
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} else {
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$content.css({
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'-webkit-transition': '',
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'transition': ''
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function calculateHeight($el) {
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var height = 0;
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$el.children().each(function() {
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height = height + $(this).outerHeight(true);
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});
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$el.data('oHeight', height);
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}
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function updateParentHeight($parentAccordion, $currentAccordion, qty, operation) {
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var $content = $parentAccordion.filter('.open').find('> [data-content]'),
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$childs = $content.find('[data-accordion].open > [data-content]'),
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$matched;
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|
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if(!opts.singleOpen) {
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$childs = $childs.not($currentAccordion.siblings('[data-accordion].open').find('> [data-content]'));
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}
|
|
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$matched = $content.add($childs);
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if($parentAccordion.hasClass('open')) {
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$matched.each(function() {
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var currentHeight = $(this).data('oHeight');
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switch (operation) {
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case '+':
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$(this).data('oHeight', currentHeight + qty);
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|
break;
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|
case '-':
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$(this).data('oHeight', currentHeight - qty);
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break;
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default:
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|
throw 'updateParentHeight method needs an operation';
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|
}
|
|
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$(this).css('max-height', $(this).data('oHeight'));
|
|
});
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|
}
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}
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function refreshHeight($accordion) {
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|
if($accordion.hasClass('open')) {
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|
var $content = $accordion.find('> [data-content]'),
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|
$childs = $content.find('[data-accordion].open > [data-content]'),
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|
$matched = $content.add($childs);
|
|
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|
calculateHeight($matched);
|
|
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|
$matched.css('max-height', $matched.data('oHeight'));
|
|
}
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|
}
|
|
|
|
function closeAccordion($accordion, $content) {
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|
$accordion.trigger('accordion.close');
|
|
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|
if(CSStransitions) {
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|
if(accordionHasParent) {
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|
var $parentAccordions = $accordion.parents('[data-accordion]');
|
|
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|
updateParentHeight($parentAccordions, $accordion, $content.data('oHeight'), '-');
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|
}
|
|
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|
$content.css(closedCSS);
|
|
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|
$accordion.removeClass('open');
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} else {
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|
$content.css('max-height', $content.data('oHeight'));
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|
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$content.animate(closedCSS, opts.transitionSpeed);
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|
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|
$accordion.removeClass('open');
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|
}
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|
}
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|
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function openAccordion($accordion, $content) {
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$accordion.trigger('accordion.open');
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if(CSStransitions) {
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toggleTransition($content);
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|
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|
if(accordionHasParent) {
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var $parentAccordions = $accordion.parents('[data-accordion]');
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|
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|
updateParentHeight($parentAccordions, $accordion, $content.data('oHeight'), '+');
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}
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requestAnimFrame(function() {
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$content.css('max-height', $content.data('oHeight'));
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});
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|
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$accordion.addClass('open');
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} else {
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$content.animate({
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'max-height': $content.data('oHeight')
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|
}, opts.transitionSpeed, function() {
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|
$content.css({'max-height': 'none'});
|
|
});
|
|
|
|
$accordion.addClass('open');
|
|
}
|
|
}
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|
|
|
function closeSiblingAccordions($accordion) {
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|
var $accordionGroup = $accordion.closest(opts.groupElement);
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|
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|
var $siblings = $accordion.siblings('[data-accordion]').filter('.open'),
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|
$siblingsChildren = $siblings.find('[data-accordion]').filter('.open');
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|
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|
var $otherAccordions = $siblings.add($siblingsChildren);
|
|
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|
$otherAccordions.each(function() {
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|
var $accordion = $(this),
|
|
$content = $accordion.find(opts.contentElement);
|
|
|
|
closeAccordion($accordion, $content);
|
|
});
|
|
|
|
$otherAccordions.removeClass('open');
|
|
}
|
|
|
|
function toggleAccordion() {
|
|
var isAccordionGroup = (opts.singleOpen) ? $accordion.parents(opts.groupElement).length > 0 : false;
|
|
|
|
calculateHeight($content);
|
|
|
|
if(isAccordionGroup) {
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|
closeSiblingAccordions($accordion);
|
|
}
|
|
|
|
if($accordion.hasClass('open')) {
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|
closeAccordion($accordion, $content);
|
|
} else {
|
|
openAccordion($accordion, $content);
|
|
}
|
|
}
|
|
|
|
function addEventListeners() {
|
|
$controls.on('click', toggleAccordion);
|
|
|
|
$controls.on('accordion.toggle', function() {
|
|
if(opts.singleOpen && $controls.length > 1) {
|
|
return false;
|
|
}
|
|
|
|
toggleAccordion();
|
|
});
|
|
|
|
$(window).on('resize', debounce(function() {
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|
refreshHeight($accordion);
|
|
}));
|
|
}
|
|
|
|
function setup() {
|
|
$content.each(function() {
|
|
var $curr = $(this);
|
|
|
|
if($curr.css('max-height') != 0) {
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|
if(!$curr.closest('[data-accordion]').hasClass('open')) {
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|
$curr.css({ 'max-height': 0, 'overflow': 'hidden' });
|
|
} else {
|
|
toggleTransition($curr);
|
|
calculateHeight($curr);
|
|
|
|
$curr.css('max-height', $curr.data('oHeight'));
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
if(!$accordion.attr('data-accordion')) {
|
|
$accordion.attr('data-accordion', '');
|
|
$accordion.find(opts.controlElement).attr('data-control', '');
|
|
$accordion.find(opts.contentElement).attr('data-content', '');
|
|
}
|
|
}
|
|
|
|
setup();
|
|
addEventListeners();
|
|
};
|
|
|
|
$.fn[pluginName] = function ( options ) {
|
|
return this.each(function () {
|
|
if (!$.data(this, 'plugin_' + pluginName)) {
|
|
$.data(this, 'plugin_' + pluginName,
|
|
new Accordion( this, options ));
|
|
}
|
|
});
|
|
}
|
|
|
|
})( jQuery, window, document );
|
|
|
|
$(document).ready(function() {
|
|
$('#multiple [data-accordion]').accordion({
|
|
singleOpen: false
|
|
});
|
|
});
|
|
|
|
</script>
|
|
|
|
|
|
<noscript>
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<iframe src="//www.googletagmanager.com/ns.html?id=GTM-PSVHG8"
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height="0" width="0" style="display:none;visibility:hidden"></iframe>
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</noscript>
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<script>
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(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
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new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
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})(window,document,'script','dataLayer','GTM-PSVHG8');
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</script>
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