Using BuildKit

[chrisjsewell]

Potentially useful for multi-stage builds. When I simply added DOCKER_BUILDKIT: 1 to builds, but it didn't seem to properly use the cached images: https://github.com/chrisjsewell/aiida-docker-compose/runs/741356901?check_suite_focus=true.

• https://docs.docker.com/develop/develop-images/build_enhancements/
• https://www.docker.com/blog/advanced-dockerfiles-faster-builds-and-smaller-images-using-buildkit-and-multistage-builds/
• https://dev.to/pst418/speed-up-multi-stage-docker-builds-in-ci-cd-with-buildkit-s-registry-cache-11gi
• https://github.com/kbst/terraform-kubestack/blob/master/.github/workflows/main.yml

doesn't look like you can use this in docker hub automated builds yet https://github.com/docker/hub-feedback/issues/1918

[chrisjsewell]

there's also this action: https://github.com/whoan/docker-build-with-cache-action, but it doesn't support buildkit

[chrisjsewell]

related issues:

• https://github.com/elgohr/Publish-Docker-Github-Action/issues/87
• https://github.com/docker/build-push-action/issues/32