Automated repository tests

Docker Cloud can automatically test changes pushed to your source code repositories using containers. You can enable Autotest on any Docker Cloud repository to run tests at each push to the source code repository, similar to a continuous integration testing service.

Enabling Autotest builds an image for testing purposes, but does not automatically push the built image to the Docker repository. If you want to push built images to your Docker Cloud repository, enable Automated Builds.

Set up automated test files

To set up your automated tests, create a docker-compose.test.yml file in the root of your source code repository which defines a sut service that lists the tests to be run.


  build: .

The example above builds the repository, and runs the file inside a container using the built image.

You can define any number of linked services in this file. The only requirement is that sut is defined. Its return code determines if tests passed or not: tests pass if the sut service returns 0, and fail otherwise.

You can define more than one docker-compose.test.yml file if needed. Any file that ends in .test.yml is used for testing, and the tests run sequentially.

Note: If you enable Automated builds, they will also run any tests defined in the test.yml files.

Enable automated tests on a repository

To enable testing on a source code repository, you must first create an associated build-repository in Docker Cloud. Your Autotest settings are configured on the same page as automated builds, however you do not need to enable Autobuilds to use Autotest. Autobuild is enabled per branch or tag, and you do not need to enable it at all.

Only branches that are configured to use Autobuild will push images to the Docker repository, regardless of the Autotest settings.

  1. Log in to Docker Cloud and select Repositories in the left navigation.

  2. Select the repository you want to enable Autotest on.

  3. From the repository view, click the Builds tab.

  4. Click Configure automated builds.

  5. Configure the automated build settings as explained in Automated Builds.

    At minimum you must configure:

    • The source code repository
    • the build location
    • at least one tag mapping
  6. Choose your Autotest option.

    The following options are available:

    • Off: no additional tests. Test commits only to branches that are using Autobuild to build and push images.
    • Source Repository: test commits to all branches of the source code repository, regardless of their Autobuild setting.
    • Source Repository & External Pull Requests: tests commits to all branches of the source code repository, including any pull requests opened against it.

    Note: For security purposes, autotest on external pull requests is disabled on public repositories. If you select this option on a public repository, tests will still run on pushes to the source code repository, but not on pull requests.

  7. Click Save to save the settings, or click Save and build to save and run an initial test.

Check your test results

From the repository’s details page, click Timeline.

From this tab you can see any pending, in-progress, successful, and failed builds and test runs for the repository.

You can click any timeline entry to view the logs for each test run.


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