update readme

Author: xin.xu1

README.md

@@ -175,6 +175,9 @@
 #### Docker 运行
 
 ```bash
+git clone git@github.com:mimo-x/Code-Review-GPT-Gitlab.git
+cd Code-Review-GPT-Gitlab
+
 docker run -d -v ./config:/workspace/config -p 8080:80 --name codereview xuxin1/llmcodereview:latest
 ```