add multiarch build configuration

Author: sangyulee

.github/workflows/release-image.yaml

@@ -40,5 +40,6 @@ jobs:
         push: true
         cache-to: type=gha,mode=max
         cache-from: type=gha,mode=max
+        platforms: linux/amd64,linux/arm64
         tags: ${{ steps.meta.outputs.tags }}
         labels: ${{ steps.meta.outputs.labels }}