Hi, I'm using docker image zentaopms:15.0.1, and I want to expose MariaDB port for external using. I've tried with this docker-compose file, and try to connect to port 3306, but not working

version: "3.8"

services:

  zentao:

    container_name: "zentao"

    image: "easysoft/zentao:15.0.1"

    restart: always

    volumes:

      - "./data/zentao:/www/zentaopms"

      - "./data/zentao-mysql:/var/lib/mysql"

    environment:

      MYSQL_ROOT_PASSWORD: "..."

      MYSQL_ROOT_HOST: "%"

    ports:

      - "80:80"

      - "3306:3306"

So how can I expose MariaDB port (3306) with docker?