据 Docker 说，

version: '3'
services:
  db:
    image: mariadb:latest
    container_name: mariadb
    restart: always
    volumes:
      - ./mysql/initdb/:/docker-entrypoint-initdb.d
      - ./mysql/data/:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=root-pwd
      - MYSQL_DATABASE=appdb
      - MYSQL_USER=appuser
      - MYSQL_PASSWORD=user-pwd
  php:
    image: php:fpm-alpine
    container_name: php
    restart: always
    volumes:
      - ./www/:/var/www/html
    expose:
      - "9000"
  nginx:
    image: nginx:alpine
    container_name: nginx
    restart: always
    volumes:
      - ./nginx/conf/nginx.conf:/etc/nginx/conf/nginx.conf:ro
      - ./nginx/conf.d:/etc/nginx/conf.d:ro
      - ./www:/var/www/html
    ports:
      - "80:80"
  pma:
    image: phpmyadmin/phpmyadmin
    container_name: phpmyadmin
    restart: always
    ports:
      - "8080:80"

它会产生一个错误：

2002-php\u network\u getaddresses:getaddrinfo失败：重试-服务器没有响应（或者本地服务器的套接字配置不正确）。

登录到phpmyadmin时(http://127.0.0.1:8080).
我曾试图解决这个问题，但没有任何效果。你能找到解决办法吗？欢迎提出任何建议/意见。