dockerfile add 命令无法复制，导致没有初始化数据库。

使用数据卷来关联目录

Signed-off-by: 云飞扬 <15678871232@qq.com>

docker/docker-compose.yml

@@ -24,6 +24,7 @@ services:
     ports:
       - "3306:3306"
     volumes:
+      - ./mysql/db:/docker-entrypoint-initdb.d
       - ./mysql/conf:/etc/mysql/conf.d
       - ./mysql/logs:/logs
       - ./mysql/data:/var/lib/mysql