If I understand correctly, this is essentially a more composable way to write Dockerfiles? That alone is a very welcome improvement. They would do themselves a big favor if they were more clear on that in their marketing, instead of boasting around the bush with all kinds of other terminology and claims of redefining foundations.

If I already have a Dockerfile that doesn’t need composition, how does this help me vs being a small cosmetic improvement over ”docker build” command line?