docker上面安装mysql5.7

要在Docker上安装MySQL 5.7，可以按照以下步骤进行操作：

1. 首先，使用以下命令创建需要挂载的目录：

mkdir -p /usr/local/docker/mysql5.7/conf
mkdir -p /usr/local/docker/mysql5.7/data
mkdir -p /usr/local/docker/mysql5.7/log

2. 停止并删除之前创建的MySQL 5.7容器：

docker stop mysql5.7
docker rm mysql5.7

3. 接下来，使用以下命令创建新的MySQL 5.7容器，并挂载指定的目录：

docker run -p 3315:3306 --name mysql5.7 \
-v /usr/local/docker/mysql5.7/conf:/etc/mysql/mysql.conf.d \
-v /usr/local/docker/mysql5.7/log:/var/log/ \
-v /usr/local/docker/mysql5.7/data:/var/lib/mysql \
-e MYSQL_ROOT_PASSWORD=asd123456 \
-d mysql:5.7

这将创建一个名为mysql5.7的容器，将宿主机的目录`/usr/local/docker/mysql5.7/conf`挂载到容器内的`/etc/mysql/mysql.conf.d`目录，将`/usr/local/docker/mysql5.7/log`挂载到容器内的`/var/log/`目录，将`/usr/local/docker/mysql5.7/data`挂载到容器内的`/var/lib/mysql`目录。同时，设置了MySQL的root密码为`asd123456`。

现在，您已经成功在Docker上安装了MySQL 5.7，并且数据和配置都被持久化到了宿主机上。
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