docker compose mysql中文乱码

网上很多教程都没有用，最后根据：https://www.thinbug.com/q/45729326 解决。

command增加–character-set-server=utf8mb4，–collation-server=utf8mb4_unicode_ci还是乱码：

mysql> show variables like 'char%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | latin1                     |
| character_set_connection | latin1                     |
| character_set_database   | utf8mb4                    |
| character_set_filesystem | binary                     |
| character_set_results    | latin1                     |
| character_set_server     | utf8mb4                    |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)

在environment中增加LANG: C.UTF-8解决。完整compose文件如下：

mysql:
  image: 'mysql:5.7'
  restart: always
  container_name: cim_mysql
  environment:
    LANG: C.UTF-8 # 修改1
    MYSQL_ROOT_PASSWORD: 123456
    MYSQL_DATAbase: coffeechat
    MYSQL_USER: cim
    MYSQL_PASSWORD: ldMe$q2Xl9GKyUxj
  volumes:
    - cim_mysql_data:/var/lib/mysql
    - ./setup/mysql/init/:/docker-entrypoint-initdb.d/
  ports:
    - "13306:3306"
  # 修改2
  command: [ '--default-authentication-plugin=mysql_native_password', '--character-set-server=utf8mb4',
             '--collation-server=utf8mb4_unicode_ci' ]