services:
  gs_mysql:
    image: 'mariadb:10.3'
    environment:
      MYSQL_DATABASE: ${MYSQL_DATABASE_NAME}
      # So you don't have to use root, but you can if you like
      MYSQL_USER: ${MYSQL_DATABASE_USERNAME}
      # You can use whatever password you like
      MYSQL_PASSWORD: ${MYSQL_DATABASE_PASSWORD}
      # Password for root access
      MYSQL_ROOT_PASSWORD: ${MYSQL_DATABASE_ROOT_PASSWORD}
    ports:
      # <Port exposed> : < MySQL Port running inside container>
      - '${MYSQL_DATABASE_PORT}:3306'
    expose:
      # Opens port 3306 on the container
      - '${MYSQL_DATABASE_PORT}'
      # Where our data will be persisted
    volumes:
      - gs_mariadb-master:/var/lib/mysql