feat: mount app.conf to container (#217)

Signed-off-by: sh1luo <690898835@qq.com>

docker-compose.yml

@@ -5,14 +5,16 @@ services:
       context: ./
       dockerfile: go-dockerfile
     ports:
-     - 8000:8000
+      - "8000:8000"
     depends_on:
       - db
+    volumes:
+      - ./conf:/conf/
   db:
     restart: always
     image: mysql:8.0.25
     ports:
-      - 3306:3306
+      - "3306:3306"
     environment:
       MYSQL_ROOT_PASSWORD: 123
     volumes: