第二步：安装运行mongodb

docker-compose.yml

version: '3.1'

services:
  mongo:
    image: mongo
    restart: always
    container_name: mongod
    ports:
      - "27017:27017"
    volumes:
      - $PWD/db:/data/db
      - $PWD/log:/data/log
    environment:
      MONGO_INITDB_ROOT_USERNAME: xxx
      MONGO_INITDB_ROOT_PASSWORD: xxx