Support multiple platforms docker image build (#65)

* ci: build multiple platforms

* ci: enable GitHub action for pull request

* chore: update workflow

- add manual dispatch trigger
- push image when not in pull request

.github/workflows/build-publish-image.yml

@@ -1,6 +1,8 @@
 name: Create and publish a Docker image
 
 on:
+  workflow_dispatch:
+  pull_request:
   push:
     tags:
       - 'v*'
@@ -20,6 +22,12 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v2
+
       - name: Log in to the Container registry
         uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
         with:
@@ -37,6 +45,7 @@ jobs:
         uses: docker/build-push-action@f2a1d5e99d037542a71f64918e516c093c6f3fc4
         with:
           context: .
-          push: true
+          push: ${{ github.event_name != 'pull_request' }}
+          platforms: linux/amd64,linux/arm64/v8
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}