i have connect my mariaDB using docker yaml file

version: "3"

services:
  flarum:
    image: mondedie/flarum:stable
    container_name: flarum
    env_file:
      - ./flarum.env
    volumes:
      - ./assets:/flarum/app/public/assets
      - ./extensions:/flarum/app/extensions
      - ./storage/logs:/flarum/app/storage/logs
      - ./nginx:/etc/nginx/flarum
    ports:
      - "81:8888"
    depends_on:
      - mariadb

  mariadb:
    image: mariadb:10.5
    container_name: mariadb
    environment:
      - MYSQL_ROOT_PASSWORD=root_password
      - MYSQL_DATABASE=flarum
      - MYSQL_USER=flarum
      - MYSQL_PASSWORD=flarum_password
    volumes:
      - ./mysql/db:/var/lib/mysql

docker compose up -d