Update ci.yml

Author: mtrezza

.github/workflows/ci.yml

@@ -77,6 +77,9 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+      - name: Set up QEMU
+        id: qemu
+        uses: docker/setup-qemu-action@v1
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
       - name: Build docker image