Hello - I'm wondering if it's possible to use the new Docker BuildKit feature on GitHub Actions? [BuildKit makes most builds faster and improves caching significantly.]
I tell Docker to use BuildKit locally by running:
$ DOCKER_BUILDKIT=1 docker build ...
but I don't see a way to provide this or as an environment variable at build time on GitHub Actions.
I found a page in the Actions docs for the runtime environment, but did not see an analogous page for the build environment.
If you want full control over how your Docker image is built, you can use a Docker image stored in a public registry using either of the `docker://` specifier forms in the `uses` field of your Action block.
Let us know if you have more questions.