修改项目在线演示地址；

README.md

@@ -34,7 +34,7 @@
 </p>
 
 
-:fire:项目在线演示地址：[http://139.9.66.219:3000/](http://139.9.66.219:3000/)
+:fire:项目在线演示地址：[http://117.50.186.19:3000/](http://117.50.186.19:3000/)
 
 :fire:**11W+字，共107个文档，带你玩转austin**，详情可戳：[消息推送平台文档](https://www.yuque.com/u1047901/eg5qvy/hh0gk5p4uwie8bva)
 

docker-compose.yml

@@ -13,7 +13,6 @@ services:
     command: --init-file /docker-entrypoint-initdb.d/init.sql
     volumes:
       - ./doc/sql/austin.sql:/docker-entrypoint-initdb.d/init.sql
-      - ./doc/docker/mysql:/var/lib/mysql
       - ./doc/docker/mysql/mysql.cnf:/etc/mysql/my.cnf
     ports:
       - "3306:3306"