docker-compose to create container with mariadb and phpmyadmin

docker-compose.yml

version: '3'

volumes:
  mariadb:
    driver: local

networks:
    db:
        driver: bridge

services:
  mariadb:
    image: mariadb
    restart: always
    environment:
      MARIADB_ROOT_PASSWORD: root
      MARIADB_MYSQL_LOCALHOST_USER:  root 
      MARIADB_USER: root
    expose:
        - "8889"
    ports:
        - "8889:3306"
    volumes:
     - mariadb:/var/lib/mysql
    networks:
      db:
              
  phpmyadmin:
    image: phpmyadmin
    restart: always
    expose:
      - "8888"
    ports:
      - "8888:80"
    environment:
      - PMA_HOST=mariadb
      - PMA_PORT=3306 
    networks:
      db: