使用脚本安装docker

#确保 yum 包更新到最新
sudo yum update

#执行 Docker 安装脚本,执行这个脚本会添加 docker.repo 源并安装 Docker。
curl -fsSL https://get.docker.com/ | sh

#启动 Docker 进程
sudo service docker start

#验证 docker 是否安装成功并在容器中执行一个测试的镜像
sudo docker run hello-world

设置docker开机自启动

sudo systemctl enable docker

安装docker compose

# 下载最新版本的 docker-compose 到 /usr/bin 目录下
curl -L https://github.com/docker/compose/releases/download/1.25.5/docker-compose-`uname -s`-`uname -m` -o /usr/bin/docker-compose

# 给 docker-compose 授权
chmod +x /usr/bin/docker-compose

编写docker-compose.yml

version: '3'
services:
  db:
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: somewordpress
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress
    ports:
      - "3306:3306"
  wordpress:
    depends_on:
      - db
    image: wordpress:latest
    volumes:
      - wp_site:/var/www/html
    ports:
      - "80:80"
      - "443:443"
    restart: always
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress
volumes:
  db_data:
  wp_site:
```bash

##启动wordpress
```bash
docker-compose up -d