suggestion: when changing `path`, should `file` adjust accordingly (?)

[LukasGentele]

Currently, if you want to build a Dockerfile in a subdirectory, you'll have to adjust path and file. However, when changing the context using docker build some/other/context, Docker would also prefer the file some/other/context/Dockerfile according to the context (if not specified otherwise).

Should this action also follow this style and use the Dockerfile within path if not otherwise specified? Would be a breaking change but I think it would be more consistent with the Docker CLI experience.

@jerray Happy to submit a PR if you think this idea makes sense.

[jerray]

Good idea! I didn't think too much about relation between path and file when I create this action.

Looking forward to see your PR. Thank you!

[patsevanton]

Any news?