WordPress Development in Docker which actually works - outputs all WordPress (wp-content, wp-admin, wp-includes, wp-config.php etc) with debug enabled. Use it to create something nice!

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

  wordpress:
    depends_on:
      - db
    image: wordpress:latest
    ports:
      - "8000:80"
    restart: always
    environment:
      WORDPRESS_DB_HOST: db:3306
      WORDPRESS_DB_USER: wordpress
      WORDPRESS_DB_PASSWORD: wordpress
      WORDPRESS_DEBUG: 1    
    working_dir: /var/www/html
    volumes:
      - ./:/var/www/html
volumes:
  db_data: