Simplest possible Wordpress + MySql + phpMyAdmin docker-compose.yml

docker-compose.yml

version: '3.3'

services:
  db:
    container_name: db
    image: mysql:5.7
    volumes:
      - db_data:/var/lib/mysql
    restart: always
    environment:
      MYSQL_ROOT_PASSWORD: wordpress
      MYSQL_DATABASE: wordpress
      MYSQL_USER: wordpress
      MYSQL_PASSWORD: wordpress
  wordpress:
    container_name: wordpress
    depends_on:
      - db
    image: wordpress:latest
    ports:
      - "8000:80"
    restart: always
    volumes:
      - ./wp-content:/var/www/html/wp-content
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress
  phpmyadmin:
    image: phpmyadmin/phpmyadmin
    depends_on:
      - db
    links:
      - db:mysql
    ports:
      - 8001:80
    environment:
      MYSQL_USERNAME: wordpress
      MYSQL_ROOT_PASSWORD: wordpress
volumes:
  db_data:
  wp-content: