Only show a single Docker build summary

Author: michaelmior

.github/workflows/docker.yml

@@ -48,6 +48,8 @@ jobs:
           type=raw,value=latest,enable={{is_default_branch}}
     - name: Build image
       uses: docker/build-push-action@v6
+      env:
+        DOCKER_BUILD_NO_SUMMARY: true
       with:
         context: ./target/docker/stage
         load: true