WordPress的码头工人撰写不会启动mysql

Question

我试图设置使用docker-compose.yml为WordPress开发码头工人，容器，看起来像这样：

version: '3' 
services: 
    db: 
    image: mysql:5.7 
    volumes: 
     - data:/var/lib/mysql 
    environment: 
     MYSQL_ROOT_PASSWORD: root 
     MYSQL_DATABASE: wordpress 
     MYSQL_USER: root 
    wordpress: 
    depends_on: 
     - db 
    image: wordpress:latest 
    ports: 
     - 8080:80 
     - 443:443 
    volumes: 
     - ./data:/data # Required if importing an existing database 
     - ./:/var/www/html # Theme development 
    environment: 
     WORDPRESS_DB_NAME: wordpress 
     WORDPRESS_DB_HOST: db:3306 
     WORDPRESS_DB_USER: root 
     WORDPRESS_DB_PASSWORD: root 
    phpmyadmin: 
    depends_on: 
     - db 
    image: phpmyadmin/phpmyadmin 
    environment: 
     MYSQL_ROOT_PASSWORD: root 
    ports: 
     - 3306:80 
volumes: 
    data: {} 

而且我得到这样的错误：

wordpress_1 | Warning: mysqli::mysqli(): php_network_getaddresses: getaddrinfo failed: Name or service not known in - on line 22 
wordpress_1 | 
wordpress_1 | Warning: mysqli::mysqli(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Name or service not known in - on line 22 
wordpress_1 | 
wordpress_1 | MySQL Connection Error: (2002) php_network_getaddresses: getaddrinfo failed: Name or service not known 

我试图清除我的图像和容器，但没有运气。任何想法为什么发生这种情况

Answer 1

尝试提供wordpress和phpmyadmin的链接选项。

links: 
    - db:mysql 

编辑：检查this的问题。将MySQL添加到数据库。如果解决了这个问题，我不会这么做，我以后一回家就必须尝试。