Update build.yml

Author: tillsteinbach

.github/workflows/build.yml

@@ -21,6 +21,8 @@ jobs:
 
     # Steps represent a sequence of tasks that will be executed as part of the job
     steps:
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
       - name: Setup Docker Buildx
         uses: docker/setup-buildx-action@v1
       - name: Login to DockerHub