use multi image

Author: sawanoboly

.github/workflows/docker-push-ghcr.yml

@@ -52,8 +52,11 @@ jobs:
         with:
           cosign-release: 'v1.13.1'
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+        with:
+          platforms: linux/amd64,linux/arm64
 
-      # Workaround: https://github.com/docker/build-push-action/issues/461
       - name: Setup Docker buildx
         uses: docker/setup-buildx-action@v2
 
@@ -87,7 +90,7 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-
+          platforms: linux/amd64,linux/arm64
 
       # Sign the resulting Docker image digest except on PRs.
       # This will only write to the public Rekor transparency log when the Docker