Is there a way to specify an image’s build dependencies without manually grouping targets for parallelization?

For example, if image D depends on both B and C to be built first and images B and C depended on A.

The build order would be:

0) A builds by itself.

1) B and C builds in parallel.

2) D builds by itself.

I built a tool to do this years ago and I’d really like to retire it.

Compose ignores “depends_on” for builds: https://github.com/docker/compose/issues/6332#issuecomment-4...