version: '3.1'

services:

  test_db:
    image: mariadb
    restart: always
    container_name: testing_db
    environment:
      MYSQL_ROOT_PASSWORD: insecure
      MYSQL_USER: insecure
      MYSQL_PASSWORD: insecure
      MYSQL_DATABASE: insecure
    ports:
      - 127.0.0.1:3306:3306
    volumes:
      - ./mysql:/var/lib/mysql