Dockerfile构建MySQL镜像

创建工作目录

[root@localhost ~]# mkdir mysql

[root@localhost ~]# cd mysql/

编写Dockerfile文件

[root@localhost mysql]# vim Dockerfile

FROM centos:7

MAINTAINER Crushlinux

#安装mariadb数据库

RUN yum install -y mariadb mariadb-server mariadb-devel

#设置环境变量，便于管理

ENV MARIADB_USER root

ENV MARIADB_PASS 123456

#让容器支持中文

ENV LC_ALL en_US.UTF-8

#初始化数据库

ADD db_init.sh /root/db_init.sh

RUN chmod 775 /root/db_init.sh && /root/db_init.sh

#导出端口

EXPOSE 3306

#设置默认启动命令

CMD ["mysqld_safe"]

[root@localhost mysql]# vim db_init.sh

#!/bin/bash

mysql_install_db --user=mysql

sleep 3

mysqld_safe &

sleep 3

mysql -e "use mysql; grant all privileges on *.* to '$MARIADB_USER'@'%' identified by '$MARIADB_PASS' with grant option;"

h=$(hostname)

mysql -e "use mysql; update user set password=password('$MARIADB_PASS') where user='$MARIADB_USER' and host='$h';"

mysql -e "flush privileges;"

~                                

构建镜像

[root@localhost mysql]# docker build -t mysql:new .

[root@localhost mysql]# docker images mysql:new

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE

mysql               new                 7e3136f324a6        41 seconds ago      1.02 GB

[root@localhost mysql]#  docker run -d -p 3306:3306 --name=mysql mysql:new

6c1e44f274a40d5592ff144a3e0e5b6875dbaa9f08441c469d282db658c35944

测试容器

因为宿主机没有mariadb所以要下载

[root@localhost mysql]# yum -y install mariadb mariadb-devel

测试容器

[root@localhost mysql]# mysql -h 192.168.50.59 -u root -P 3306 -p123456

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 2

Server version: 5.5.68-MariaDB MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> exit

Bye

成功