Update docker.yml

Author: half2me

.github/workflows/docker.yml

@@ -13,6 +13,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
+      - uses: docker/setup-qemu-action@v1
       - uses: docker/setup-buildx-action@v1
       - uses: docker/login-action@v1
         with: