use docker build push action

Author: willcl-ark

.github/workflows/master.yml

@@ -28,62 +28,27 @@ jobs:
         uses: docker/setup-buildx-action@v3
         with:
           buildkitd-flags: --debug
-      - name: Cache Docker layers
-        uses: actions/cache@v4
-        with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ matrix.platform }}-${{ matrix.variant.type }}-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-${{ matrix.platform }}-${{ matrix.variant.type }}-
-
-      - name: Prepare Docker build
-        id: prepare
-        run: |
-          REPO="bitcoin/bitcoin"
-          BRANCH="master"
-          PUSH="false"
-          if [[ "${{ github.event_name }}" == "schedule" ]]; then
-            PUSH="true"
-          fi
-
-          echo "build_date=$(date -u +'%Y-%m-%dT%H:%M:%SZ')" | tee -a $GITHUB_OUTPUT
-          echo "docker_platforms=${{ matrix.platform }}" | tee -a $GITHUB_OUTPUT
-          echo "docker_username=bitcoin" | tee -a $GITHUB_OUTPUT
-          echo "push=${PUSH}" | tee -a $GITHUB_OUTPUT
-          echo "tags=${REPO}:master${{ matrix.variant.type }}" | tee -a $GITHUB_OUTPUT
 
       - name: Login into Docker Hub
         uses: docker/login-action@v3
         with:
-          username: ${{ steps.prepare.outputs.docker_username }}
+          username: bitcoin
           password: ${{ secrets.DOCKER_HUB_PASSWORD }}
 
       - name: ccache
         uses: hendrikmuhs/[email protected]
         with:
           create-symlink: true
 
-      - name: Build Docker image
-        run: |
-          TAGS=(${{ steps.prepare.outputs.tags }})
-
-          echo "Build date: ${{ steps.prepare.outputs.build_date }}"
-          echo "Docker platform: ${{ steps.prepare.outputs.docker_platforms }}"
-          echo "Push: ${{ steps.prepare.outputs.push }}"
-          echo "Tags: ${{ steps.prepare.outputs.tags }}"
-
-          docker buildx build --platform ${{ steps.prepare.outputs.docker_platforms }} \
-            --output "type=image,push=${{ steps.prepare.outputs.push }}" \
-            --progress=plain \
-            --cache-from "type=local,src=/tmp/.buildx-cache" \
-            --cache-to "type=local,dest=/tmp/.buildx-cache-new,mode=max" \
-            --build-arg "BUILD_DATE=${{ steps.prepare.outputs.build_date }}" \
-            --build-arg "VCS_REF=${GITHUB_SHA::8}" \
-            $(printf "%s" "${TAGS[@]/#/ --tag }" ) \
-            master${{ matrix.variant.suffix }}
-
-          # Temp fix
-          # https://github.com/docker/build-push-action/issues/252
-          # https://github.com/moby/buildkit/issues/1896
-          rm -rf /tmp/.buildx-cache
-          mv /tmp/.buildx-cache-new /tmp/.buildx-cache
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v6
+        with:
+          context: master${{ matrix.variant.suffix }}
+          platforms: ${{ matrix.platform }}
+          push: ${{ github.event_name == 'schedule' }}
+          tags: bitcoin/bitcoin:master${{ matrix.variant.type }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          build-args: |
+            BUILD_DATE=${{ github.event.repository.updated_at }}
+            VCS_REF=${{ github.sha }}