$npm install => [(BE) $cd backend $nodemon server.js => (FE) $npm start] OR [$npm run dev] => access "localhost:3000"
$npm install
$cd backend
backend$nodemon server.js
backend$ cd ..
$npm start
OR
$npm run dev
https://github.com/tquangdo/node-zoom-clone-app/blob/master/memo.txt
ATLAS_URI
: https://github.com/tquangdo/mern-excercise-tracker/blob/master/backend/server.js#L12REACT_APP_DOMAINNAME
: https://github.com/tquangdo/mern-excercise-tracker/blob/master/src/constants/ConfigConst.jstest
mean123