install packages

npm init
npm install
npm install express
npm install cors
npm install http-proxy-middleware

packages version

npm version : 7.24.2
node version : 16.10.0
express version : 4.17.1
cors version : 2.8.5
http-proxy-middleware version : 2.0.1

how run

node app.js

helps

nodejs 로 api gateway 만들기 (+auth기능) https://medium.com/geekculture/create-an-api-gateway-using-nodejs-and-express-933d1ca23322
-> 추후 시간 남으면 Auth 기능도 추가