docker-metadata

This Buildkite plugin applies a base set of tags and labels to Docker images, similar to the GitHub CI Action,

Results will be stored in a directory. The directory’s path can be found in the DOCKER_METADATA_DIR environment variable.

Labels will be accessible through the DOCKER_METADATA_DIR/labels directory, while tags will be accessible through the DOCKER_METADATA_DIR/tags directory. To parse them, iterate over each file’s lines.

Example

Add the following to your pipeline.yml:

steps:
  - command: ls
    plugins:
      - equinixmetal-buildkite/docker-metadata#v1.0.0:
          images:
          - 'my-org/my-image'

The default settings will create a tag with the git commit SHA. (e.g. my-org/my-image:12345678).

Also, the image will be labeled with the following labels:

• org.opencontainers.image.source=$BUILDKITE_REPO
• org.opencontainers.image.revision=$BUILDKITE_COMMIT
• org.opencontainers.image.created=<Current date in ISO 8601>

Configuration

images (Required, array)

The image or set of images to build.

extra_tags (Optional, array)

An extra set of tags to add to the image. E.g. latest or dev.

tag_prefix (Optional, string)

Prefix all tags with provided string

title (Optional, string)

The title of the image. This will be persisted as the org.opencontainers.image.title label.

licenses (Optional, string)

The licenses of the image. This will be persisted as the org.opencontainers.image.licenses label.

vendor (Optional, string)

The vendor of the image. This will be persisted as the org.opencontainers.image.vendor label.

debug (Optional, boolean)

Enable debug logging for this plugin.

Developing

To run the tests:

make test

Contributing

1. Fork the repo
2. Make the changes
3. Run the tests
4. Commit and push your changes
5. Send a pull request