build multiple platform image

.github/workflows/main.yml

@@ -53,6 +53,10 @@ jobs:
     steps:
       - name: Check out the repo
         uses: actions/checkout@v4
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with:
@@ -75,7 +79,7 @@ jobs:
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-
+          platforms: linux/amd64,linux/arm64,linux/arm/v7
 
   # Code mutably borrowed from https://github.com/EmbarkStudios/cargo-deny/, thanks Embark!
   release: