Fix multi-platform builds (#7)

Author: chotiwat

.github/workflows/release.yml

@@ -48,6 +48,13 @@ jobs:
           type=ref,event=pr
           type=sha
 
+    # https://docs.docker.com/build/ci/github-actions/multi-platform/
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v3
+        
     - name: Build and push Docker image
       uses: docker/build-push-action@v3
       with: