diff --git a/docker-compose.yml.example b/docker-compose.yml.example
index 6813067..44266d0 100644
--- a/docker-compose.yml.example
+++ b/docker-compose.yml.example
@@ -3,6 +3,7 @@ services:
   py12306:
     build: .
     volumes:
+      # - ./runtime:/code/runtime  # 未使用 env.docker.py.example 可以打开此项
       - ./env.py:/config/env.py
       - py12306:/data
     ports: