修改部分文件的字符编码;修改使用Docker启动容器时的问题

docker/docker-compose.yml

@@ -2,7 +2,6 @@ version : '3.8'
 services:
   ruoyi-nacos:
     container_name: ruoyi-nacos
-    image: nacos/nacos-server
     build:
       context: ./nacos
     environment:
@@ -18,7 +17,6 @@ services:
       - ruoyi-mysql
   ruoyi-mysql:
     container_name: ruoyi-mysql
-    image: mysql:5.7
     build:
       context: ./mysql
     ports:
@@ -40,7 +38,6 @@ services:
       MYSQL_ROOT_PASSWORD: password
   ruoyi-redis:
     container_name: ruoyi-redis
-    image: redis
     build:
       context: ./redis
     ports: