qemu setup for tag

.github/workflows/build-tag.yml

@@ -12,6 +12,13 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
+      - name: Set up QEMU
+        id: qemu
+        uses: docker/setup-qemu-action@v1
+        with:
+          image: tonistiigi/binfmt:latest
+          platforms: arm64,arm
+
       - name: Setup Go
         uses: actions/setup-go@v2
         with: