Wordpress Docker compose

docker-compose.yml

version: "2"

services:
  db:
    image: mariadb
    # uncomment the following two lines for data persistence
    #volumes:
    #  - ./db_data:/var/lib/mysql
    environment:
      - MYSQL_ROOT_PASSWORD=simplepw
    # uncomment the following lines, to be able to access the database on your machine
    #ports:
    #  - "3306:3306"
  wp:
    image: wordpress
    volumes:
      - ./wordpress:/var/www/html
    ports:
      - "80:80"
    environment:
      - WORDPRESS_DB_HOST=db
      - WORDPRESS_DB_PASSWORD=simplepw