v4.0.0 (🥧 Post Birthday Cake)

Changes

• Support omitting compose file version (#307) @vanstee

This is a major release because it changes the default behaviour when a compose file has no version. We are being cautious as it is impossible to test all scenarios, but it is likely you can just upgrade, and nothing will break unless you are using a very old docker-compose version (before v1.27.0).

Dependency Updates

• Update buildkite plugin shellcheck to v1.3.0 (#340) @renovate

Upgrading

To upgrade, update your pipeline.yml files:

steps:
  - command: test.sh
    plugins:
-     docker-compose#v3.13.0:
+     docker-compose#v4.0.0:
        image: someimage
        workdir: /app