add arm64 build

.github/workflows/docker-publish.yml

@@ -68,14 +68,20 @@ jobs:
 
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
+      - name: Set some variables for the image
+        run: |
+          echo "IMAGE_VERSION=${GITHUB_REF_NAME#v}" >> $GITHUB_ENV
+          echo "IMAGE_NAME=${GITHUB_REPOSITORY,,}" >> $GITHUB_ENV
       - name: Build and push Docker image
         id: build-and-push
         uses: docker/build-push-action@v2
         with:
           context: .
-          platforms: linux/amd64
+          platforms: linux/amd64,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
+          tags: |
+            ghcr.io/${{ env.IMAGE_NAME }}:latest
+            ghcr.io/${{ env.IMAGE_NAME }}:${{ env.IMAGE_VERSION }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max