Files
Manuel de la Peña b951e92f57 feat(guides): migrate all testcontainers.com guides (#24505)
## Description

Migrate 17 Testcontainers guides from testcontainers.com into the Docker
docs site, covering Java (14 guides), .NET (2 guides), and Node.js (1
guide). This follows up on PR #24450 which added the initial Go and
Python guides.

Each guide is converted from AsciiDoc to Hugo Markdown, split into
multi-chapter stepper navigation, updated to the latest Testcontainers
API, and verified with passing tests running in containers.

Java guides use testcontainers-java 2.0.4 with the new 2.x Maven
coordinates and package names (e.g., `testcontainers-postgresql`,
`org.testcontainers.postgresql.PostgreSQLContainer`). The Quarkus guide
uses Quarkus 3.22.3 with TC 1.x managed by the Quarkus BOM, since no
released Quarkus version ships TC 2.x yet.

## How to test

All code snippets have been verified by running each guide's source
repository tests inside Docker containers with the Docker socket
mounted.

To re-run the verification, use the `/testcontainers-guides-migrator`
skill included in this PR
(`.claude/skills/testcontainers-guides-migrator/SKILL.md`). The skill's
Step 6 documents the exact container commands and macOS Docker Desktop
workarounds (host override, docker-java API version, etc.) needed to run
each language's tests:

```
/testcontainers-guides-migrator I want you to verify all the guides in this branch.
Do a full review, verifying that all code snippets compile, the code is executable,
and ALL the tests pass. Run them as docker containers, never locally.
```

## Related issues or tickets

Supersedes #24450 (expanded from 2 guides to all 19)

## Reviews

- [ ] Technical review
- [ ] Editorial review
- [ ] Product review

---------

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-03-25 10:03:26 +00:00

1.7 KiB

title, linkTitle, description, weight
title linkTitle description weight
Run tests and next steps Run tests Run your Testcontainers-based integration tests and explore next steps. 30

Run the tests

Run the tests using Maven:

$ mvn test

You can see in the logs that Testcontainers pulls the Postgres Docker image from Docker Hub (if not already available locally), starts the container, and runs the test.

Writing an integration test using Testcontainers works like writing a unit test that you can run from your IDE. Your teammates can clone the project and run tests without installing Postgres on their machines.

Summary

The Testcontainers for Java library helps you write integration tests using the same type of database (Postgres) that you use in production, instead of mocks. Because you aren't using mocks and instead talk to real services, you're free to refactor code and still verify that the application works as expected.

In addition to Postgres, Testcontainers provides dedicated modules for many SQL databases, NoSQL databases, messaging queues, and more. You can use Testcontainers to run any containerized dependency for your tests.

To learn more about Testcontainers, visit the Testcontainers overview.

Further reading