1.编辑docker-compose.yml文件，使用docker-compose up -d 命令部署redis容器

version: '3.0'

services:
  redis:
    image: redis:alpine
    container_name: wordpress-redis
    restart: unless-stopped
    volumes:
      - ./redis-data:/data
    networks:
      - persist

networks:
  persist:
    external:
      name: daoker_net

2.在WordPress所在的容器中执行下列命令行，安装redis

pecl install redis
echo "extension=redis.so" > /usr/local/etc/php/conf.d/docker-php-ext-redis.ini

3.修改wp-config.php文件,在其中添加如下代码

define('WP_REDIS_HOST', 'wordpress-redis');
define('WP_REDIS_PORT', '6379');

4.安装redis插件