test docker build and push

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ on:
       - main
       - develop
 jobs:
-  build:
+  build_and_test:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -32,3 +32,39 @@ jobs:
 
       - name: Test
         run: dotnet test --no-restore --verbosity normal
+  build_and_push:
+    name: Build & Publish to Docker Hub
+    needs: build_and_test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+      - name: Cache Docker layers
+        uses: actions/cache@v2.1.4
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-buildx-
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_ACCESS_TOKEN }}
+      - name: Extract Git Tag
+        run: echo ::set-env name=GIT_TAG::${GITHUB_REF/refs\/tags\//:1}
+      - name: Build and push base
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./docker/Dockerfile
+          push: true
+          build-args: |
+            INFO_VERSION=${{ env.GIT_TAG }}-docker
+          tags: |
+            jasongdove/ersatztv:develop
+#            jasongdove/ersatztv:${{ env.GIT_TAG }}
+          cache-from: type=local,src=/tmp/.buildx-cache
+          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max