CD: add QEMU for multi-platform buildx

Author: Robert Sachunsky

.github/workflows/docker-image.yml

@@ -36,6 +36,9 @@ jobs:
         # we need tags for docker version tagging
         fetch-tags: true
         fetch-depth: 0
+    - # Add support for more CPU platforms
+      name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
     - # Activate cache export feature to reduce build time of images
       name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3