
## Contributor Checklist:

Please make sure to read development guidelines in CONTRIBUTING.md. Pull requests that do not
follow the guidelines WILL TAKE LONGER TO REVIEW as the first review comment will be to follow
these guidelines.

If this PR adds a new feature that improves compatibility with docker-compose, please add a link
to the exact part of compose spec that the PR touches.

For any user-visible change please add a release note to newsfragments directory, e.g.
newsfragments/my_feature.feature. See newsfragments/README.txt for more details.

All changes require additional unit tests.
