Stapi with Mongodb

docker-compose.yml

version: "3"
services:  
  strapiexample:
    image: strapi/strapi
    container_name: strapiexample
    restart: unless-stopped
    env_file: .env
    environment:
      DATABASE_CLIENT: ${DATABASE_CLIENT}
      DATABASE_NAME: ${DATABASE_NAME}
      DATABASE_HOST: ${DATABASE_HOST}
      DATABASE_PORT: ${DATABASE_PORT}
      DATABASE_USERNAME: ${DATABASE_USERNAME}
      DATABASE_PASSWORD: ${DATABASE_PASSWORD}
  #    links:
  #      - mongo:mongo
    networks:
      - strapi-app-network
    volumes:
      - ./apps:/srv/app
    ports:
      - "1337:1337"
  mongoexample:
    image: mongo
    container_name: mongoexample
    restart: unless-stopped
    env_file: .env
    environment:
      MONGO_INITDB_ROOT_USERNAME: ${MONGO_INITDB_ROOT_USERNAME}
      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_INITDB_ROOT_PASSWORD}
    networks:
      - strapi-app-network
    volumes:
      - strapidata:/data/db
    ports:
      - "27017:27017"
networks:  
  strapi-app-network:
    driver: bridge
volumes:  
  strapidata:

.env file

DATABASE_CLIENT=mongo
DATABASE_NAME=strapi
DATABASE_HOST=mongoexample
DATABASE_PORT=27017
DATABASE_USERNAME=strapi
DATABASE_PASSWORD=password
MONGO_INITDB_ROOT_USERNAME=strapi
MONGO_INITDB_ROOT_PASSWORD=password