docker build with cache

.github/workflows/cache-build.yml

@@ -0,0 +1,59 @@
+name: Docker Image Build with cache
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches: [ main ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  cache_build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Prepare
+        id: prep
+        run: |
+          TAG=$(echo $GITHUB_SHA | head -c7)
+          IMAGE="cndp"
+          echo ::set-output name=tagged_image::${IMAGE}:${TAG}
+          echo ::set-output name=tag::${TAG}
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@master
+
+      # Registry login step intentionally missing
+
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-single-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-single-buildx
+
+      - name: Build production image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          builder: ${{ steps.buildx.outputs.name }}
+          file: ./containerization/docker/ubuntu/Dockerfile
+          push: false # This would be set to true in a real world deployment scenario.
+          tags: ${{ steps.prep.outputs.tagged_image }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache-new
+
+        # Temp fix
+        # https://github.com/docker/build-push-action/issues/252
+        # https://github.com/moby/buildkit/issues/1896
+      - name: Move cache
+        run: |
+          rm -rf /tmp/.buildx-cache
+          mv /tmp/.buildx-cache-new /tmp/.buildx-cache