start middleware
# infra
$ docker-compose up
# init db
$ npm install
$ ./init_mogodb.js --password=example --user=mzm --user_password={{password}} --port=27018
start components
# start frontend
$ cd mzm-frontend && npm start
# start backend
$ cd mzm-backend && npm start
# start socket
$ cd mzm-socket && npm start
# start auth
$ cd mzm-auth && npm start