docker-docs/engine/installation/linux/debian.md

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Instructions for installing Docker on Debian	Docker, Docker documentation, requirements, apt, installation, debian, install, uninstall, upgrade, update	/engine/installation/debian/ /engine/installation/linux/raspbian/	Get Docker for Debian

To get started with Docker on Debian, make sure you meet the prerequisites, then install Docker.

Prerequisites

Docker EE customers

Docker EE is not supported on Debian. For a list of supported operating systems and distributions for different Docker editions, see Docker variants.

OS requirements

To install Docker, you need the 64-bit version of one of these Debian or Raspbian versions:

• Stretch (testing)
• Jessie 8.0 (LTS) / Raspbian Jessie
• Wheezy 7.7 (LTS)

Uninstall old versions

Older versions of Docker were called docker or docker-engine. If these are installed, uninstall them:

$ sudo apt-get remove docker docker-engine

It's OK if apt-get reports that none of these packages are installed.

The contents of /var/lib/docker/, including images, containers, volumes, and networks, are preserved. The Docker CE package is now called docker-ce.

Extra steps for Wheezy 7.7

• You need at least version 3.10 of the Linux kernel. Debian Wheezy ships with version 3.2, so you may need to update the kernel{: target="blank" class="" }. To check your kernel version:

  $ uname -r
  

• Enable the backports repository. See the Debian documentation{: target="blank" class""}.

Install Docker CE

You can install Docker CE in different ways, depending on your needs:

• Most users set up Docker's repositories and install from them, for ease of installation and upgrade tasks. This is the recommended approach.

• Some users download the DEB package and install it manually and manage upgrades completely manually. This is useful in situations such as installing Docker on air-gapped systems with no access to the internet.

Install using the repository

Before you install Docker CE for the first time on a new host machine, you need to set up the Docker repository. Afterward, you can install and update Docker from the repository.

Set up the repository

{% assign download-url-base = "https://download.docker.com/linux/debian" %}

1. Install packages to allow apt to use a repository over HTTPS:

   Jessie or Stretch:

   $ sudo apt-get install \
        apt-transport-https \
        ca-certificates \
        curl \
        software-properties-common
   

   Wheezy:

   $ sudo apt-get install \
        apt-transport-https \
        ca-certificates \
        curl \
        python-software-properties
   

2. Add Docker's official GPG key:

   $ curl -fsSL {{ download-url-base}}/gpg | sudo apt-key add -
   

   Verify that the key ID is 9DC8 5822 9FC7 DD38 854A E2D8 8D81 803C 0EBF CD88.

   $ sudo apt-key fingerprint 0EBFCD88
   
   pub   4096R/0EBFCD88 2017-02-22
         Key fingerprint = 9DC8 5822 9FC7 DD38 854A  E2D8 8D81 803C 0EBF CD88
   uid                  Docker Release (CE deb) <docker@docker.com>
   sub   4096R/F273FCD8 2017-02-22
   

3. Use the following command to set up the stable repository.

   To add the edge repository, add edge after stable on the last line of the command. For information about stable and edge builds, see Docker variants.

   Note

   : The lsb_release -cs sub-command below returns the name of your Debian distribution, such as jessie.

   $ sudo add-apt-repository \
      "deb [arch=amd64] {{ download-url-base }} \
      $(lsb_release -cs) \
      stable"
   

Install Docker CE

1. Update the apt package index.

   $ sudo apt-get update
   

2. Install the latest version of Docker, or go to the next step to install a specific version. Any existing installation of Docker is replaced.

   Use this command to install the latest version of Docker:

   $ sudo apt-get install docker-ce
   

   Warning

   : If you have multiple Docker repositories enabled, installing or updating without specifying a version in the apt-get install or apt-get update command will always install the highest possible version, which may not be appropriate for your stability needs.

3. On production systems, you should install a specific version of Docker instead of always using the latest. This output is truncated. List the available versions:

   $ apt-cache madison docker-ce
   
   docker-ce | 17.03.0~ce-0~debian-jessie | {{ download-url-base}} jessie/stable amd64 Packages
   

   The contents of the list depend upon which repositories are enabled, and will be specific to your version of Debian (indicated by the stretch suffix on the version, in this example). Choose a specific version to install. The second column is the version string. The third column is the repository name, which indicates which repository the package is from and by extension its stability level. To install a specific version, append the version string to the package name and separate them by an equals sign (=):

   $ sudo apt-get install docker-ce=<VERSION_STRING>
   

   The Docker daemon starts automatically.

4. Verify that Docker CE is installed correctly by running the hello-world image.

   $ sudo docker run hello-world
   

   This command downloads a test image and runs it in a container. When the container runs, it prints an informational message and exits.

Docker CE is installed and running. You need to use sudo to run Docker commands. Continue to Linux postinstall to allow non-privileged users to run Docker commands and for other optional configuration steps.

Upgrade Docker CE

To upgrade Docker, first run sudo apt-get update, then follow the installation instructions, choosing the new version you want to install.

Install from a package

If you cannot use Docker's repository to install Docker CE, you can download the .deb file for your release and install it manually. You will need to download a new file each time you want to upgrade Docker.

1. Go to [{{ download-url-base }}/pool/stable/amd64/]({{ download-url-base }}/pool/stable/amd64/) and download the .deb file for the Docker version you want to install and for your version of Debian.

   Note

   : To install an edge package, change the word stable in the > URL to edge.

2. Install Docker CE, changing the path below to the path where you downloaded the Docker package.

   $ sudo dpkg -i /path/to/package.deb
   

   The Docker daemon starts automatically.

3. Verify that Docker CE is installed correctly by running the hello-world image.

   $ sudo docker run hello-world
   

   This command downloads a test image and runs it in a container. When the container runs, it prints an informational message and exits.

Docker CE is installed and running. You need to use sudo to run Docker commands. Continue to Post-installation steps for Linux to allow non-privileged users to run Docker commands and for other optional configuration steps.

Upgrade Docker

To upgrade Docker, download the newer package file and repeat the installation procedure, pointing to the new file.

Uninstall Docker

1. Uninstall the Docker package:

   $ sudo apt-get purge docker-ce
   

2. Images, containers, volumes, or customized configuration files on your host are not automatically removed. To delete all images, containers, and volumes:

   $ sudo rm -rf /var/lib/docker
   

You must delete any edited configuration files manually.

Next steps

• Continue to Post-installation steps for Linux

• Continue with the User Guide.