Merge pull request #201 from macbre/use-buildkit

Try to use Docker's BuildKit

Author: macbre

.github/workflows/dockerimage.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
 
-  build:
+  docker_build:
     runs-on: ubuntu-latest
 
     steps:
@@ -17,6 +17,10 @@ jobs:
       env:
         # @see https://testdriven.io/blog/faster-ci-builds-with-docker-cache/
         CACHE_IMAGE: macbre/index-digest:latest
+
+        # @see https://docs.docker.com/develop/develop-images/build_enhancements/
+        COMPOSE_DOCKER_CLI_BUILD: "1"
+        DOCKER_BUILDKIT: "1"
       run: |
         docker pull $CACHE_IMAGE
         docker build . \