version: "3.1"

services:
  mariadb:
    image: mariadb:5.5
    environment:
      - MYSQL_ROOT_PASSWORD=root
      - MYSQL_DATABASE=db
      - MYSQL_USER=hello
      - MYSQL_PASSWORD=there
    ports:
      - 3306:3306
    volumes:
      - maridb_volume:/docker-entrypoint-initdb.d
      - maridb_volume:/var/lib/mysql

volumes:
  maridb_volume: