update ci docker workflow

Signed-off-by: Markus Blaschke <mblaschke82@gmail.com>

Author: mblaschke

.github/workflows/ci-docker.yml

@@ -1,6 +1,6 @@
-name: "CI: docker build"
+name: "CI docker"
 
-on: [pull_request]
+on: [pull_request, workflow_dispatch]
 
 jobs:
   build:
@@ -19,5 +19,26 @@ jobs:
           version: latest
           args: -E exportloopref,gofmt --timeout=30m
 
-      - name: Build the Docker image
-        run: docker build . --file Dockerfile --tag ${{ github.repository }}:$(date +%s)
+      - name: Docker meta
+        id: docker_meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ${{ github.repository }},quay.io/${{ github.repository }}
+          labels: |
+            io.artifacthub.package.readme-url=https://raw.githubusercontent.com/${{ github.repository }}/${{ github.event.repository.default_branch }}/README.md
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          push: false
+          platforms: linux/amd64,linux/arm,linux/arm64
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}