Set up QEMU before running multi-arch build

Author: yhatt

.circleci/config.yml

@@ -123,6 +123,10 @@ commands:
           environment:
             DOCKER_BUILDKIT: 1
 
+      - run:
+          name: Setup QEMU
+          command: docker run --privileged --rm tonistiigi/binfmt --install all
+
       - run:
           name: Build Docker image and push to Docker Hub
           command: |