Docker playground Template containers to try things out. Resources: Buildx to build Docker images and push them to Docker Hub within GitHub Actions workflow: https://docs.docker.com/engine/reference/commandline/buildx_build/ https://evilmartians.com/chronicles/build-images-on-github-actions-with-docker-layer-caching Caching Docker layers within and between GitHub Action workflow jobs: https://www.nicolabs.net/2021/Speed-up-automated-docker-build-with-github-actions