Can someone point me at the mechanism in the docker backend that auto-magically sets up dependencies? Is it this InferDeps? https://github.com/pantsbuild/pants/blob/main/src/python/pants/backend/docker/util_rules/dependencies.py Just wondering how we currently setup a dep in a Dockerfile, and Pants knows to build it. Looking at revisiting my Ansible plugin

yea, that’s the right spot. this request https://github.com/pantsbuild/pants/blob/02e0ba2201b6afddbe41cb89f0b5917c09c7745b/src/python/pants/backend/docker/util_rules/dependencies.py#L39 extracts the info from the

Dockerfile

and the following https://github.com/pantsbuild/pants/blob/02e0ba2201b6afddbe41cb89f0b5917c09c7745b/src/python/pants/backend/docker/util_rules/dependencies.py#L48-L63 gets the addresses of any known upstream docker image targets based on that

The ansible backend has a ton of quirks - but I think first step is hacking in a dependency injection. Regardless of how useful the rest that we made already might be - I think if it can't do that step, it's overall pretty useless. At least, that's my feeling as I'm doing some deployments 🙂