fix: update_config before docker exit (#135)

[zexvar]

Problem | 问题

Docker 部署后，Config.yaml 未正确更新。
Config.yaml was not updated properly after Docker deployment.

Solution | 解决

添加了信号（signal）监听，确保在 Docker 收到退出信号时正确更新 Config.yaml。
Added signal handling to properly update Config.yaml when Docker receives exit signals.

Related Issue |相关

关闭问题 #135
Close #135