Set up QEMU prior to image build (#857)

* Set up QEMU prior to image build

Investigating to see if setting up QEMU would resolve the docker build
issues.

* Try v8

.github/workflows/publish-ghcr.yml

@@ -43,6 +43,12 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: ${{ needs.prepare-checkout.outputs.ref }}
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          # Use QEMU v8 to work around build issues. See:
+          #  * https://github.com/docker/build-push-action/issues/1309#issuecomment-2618650540
+          image: tonistiigi/binfmt:qemu-v8.1.5
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
       - name: Log in to the Container registry