diff --git a/.gitea/workflows/deploy-demo.yaml b/.gitea/workflows/deploy-demo.yaml
index 6eeeab5..b3db014 100644
--- a/.gitea/workflows/deploy-demo.yaml
+++ b/.gitea/workflows/deploy-demo.yaml
@@ -80,4 +80,4 @@ jobs:
           docker restart star-cloud-mqtt-worker
 
       - name: Step 5 - Cleanup
-        run: echo "Skip docker image prune on demo to preserve Docker build cache."
+        run: docker image prune -f --filter "until=168h"