Dockerfile seems very specific to Docker still, I don’t think they have to go through a committee to add anything to the spec

https://docs.docker.com/build/buildkit/dockerfile-release-no...

If any organization adopted the spec I would hope they would at least make it adopt a standard file extension like .oci so it would at least be more easily recognizable by IDEs, I have never liked having to put the use case as the extension like Dockerfile.dev

But I do like that docker and buildkit have been able to freely evolve the spec with things like advanced caching directives that work great in buildx