diff --git a/docker-compose.example.yml b/docker-compose.example.yml
index f051139..36035fb 100644
--- a/docker-compose.example.yml
+++ b/docker-compose.example.yml
@@ -16,6 +16,7 @@ services:
             - $PWD/tests/test_case:/test_case:ro
             - $PWD/log:/log
             # - $PWD/server:/code:ro
+            - $PWD/run:/judger
         environment:
             - BACKEND_URL=http://backend:8000/api/judge_server_heartbeat
             - SERVICE_URL=http://judge-server:12358