Reconfigure to use docker caching

.github/workflows/docker.yml

@@ -9,42 +9,8 @@ env:
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
-  build_x64:
-    name: Build x64
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v2
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-
-      - name: Log in to the Container registry
-        uses: docker/login-action@v2
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Extract metadata (tags, labels) for Docker
-        id: meta
-        uses: docker/metadata-action@9ec57ed1fcdbf14dcef7dfbe97b2010124a938b7
-        with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-
-      - name: Build and push
-        uses: docker/build-push-action@v2
-        with:
-          context: .
-          file: ./Dockerfile
-          platforms: linux/amd64
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-
-  build_arm64:
-    name: Build ARM64
+  build:
+    name: Build Multiarch
     runs-on: ubuntu-latest
 
     steps:
@@ -75,7 +41,9 @@ jobs:
         with:
           context: .
           file: ./Dockerfile
-          platforms: linux/arm64
+          platforms: linux/arm64, linux/amd64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max