docker 啟動mysql

啟動mysql報錯，原因是沒有設置環境變量，導制mysql無法進行初始化。

[root@master ~]# docker run --name mysql mysql
2020-01-05 15:05:38+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.18-1debian9 started.
2020-01-05 15:05:38+00:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
2020-01-05 15:05:38+00:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 8.0.18-1debian9 started.
2020-01-05 15:05:38+00:00 [ERROR] [Entrypoint]: Database is uninitialized and password option is not specified
        You need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD

解決方法：增加-e參數，設置環境變量指定mysql密碼

docker run --name mysql -e MYSQL_ROOT_PASSWORD=root mysql

[root@master ~]# docker run -d --name mysql -e MYSQL_ROOT_PASSWORD=root  -p 3306:3306 mysql
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