actions: use buildx multiarch

.github/workflows/docker-publish.yml

@@ -48,6 +48,8 @@ jobs:
           name: dist
           path: dist
 
+      - uses: docker/setup-buildx-action@v3
+
       - name: Log into registry ${{ env.REGISTRY }}
         uses: docker/login-action@v3
         with:
@@ -65,9 +67,11 @@ jobs:
         id: build-and-push
         uses: docker/build-push-action@v6
         with:
+          platforms: linux/amd64,linux/arm64
           context: .
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
           push: true
-          platforms: linux/arm64
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}