drupal docker compose 403

version: '2'

services:

  drupal:
    image: drupal:8.3.6
    ports:
      - "80:80"
    volumes:
      - ./www:/var/www/html/
    restart: always
    links:
      - mariadb

  mariadb:
    image: mariadb:10.2.7
    volumes:
      - ./mariadb/db:/var/lib/mysql
    environment:
      MYSQL_ROOT_PASSWORD: my_password
      MYSQL_DATABASE: drupal
      MYSQL_USER: my_user
      MYSQL_PASSWORD: my_password
    restart: always