test ci

Signed-off-by: Gabriele Santomaggio <G.santomaggio@gmail.com>

.github/workflows/docker-image.yml

@@ -13,6 +13,18 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
-    - name: Build the Docker image
-      run: docker build . --file Dockerfile --tag my-image-name:$(date +%s)
+    - name: Checkout
+        uses: actions/checkout@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+      - name: Build and export
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          tags: myimage:latest
+          outputs: type=docker,dest=/tmp/myimage.tar
+      - name: Upload artifact
+        uses: actions/upload-artifact@v3
+        with:
+          name: myimage
+          path: /tmp/myimage.tar