With noauth repo you'd do npm install; npm run build; and have the app in build folder. But you'd need to tweat .env variables before building:
REACT_APP_WEB_PUSH_PUBKEY= web push public key, npm install web-push then  web-push generate-vapid-keys --json (more at https://github.com/web-push-libs/web-push)
REACT_APP_NOAUTHD_URL= address of the noauthd server
REACT_APP_DOMAIN= domain name of your bunker (i.e. nsec.app)
REACT_APP_RELAY= relay that you'll use, can use wss://relay.nsec.app - don't use public general-purpose relays, you'll hit rate limits very fast

There is also a noauthd repo with server-side, tweak .env:
PUSH_PUBKEY= web push public key, same as above
PUSH_SECRET= web push private key that you generated above
ORIGIN= address of the server itself, like http://localhost:8000
DATABASE_URL="file:./prod.db"
BUNKER_NSEC= nsec of the bunker (needed for create_account methods)
BUNKER_RELAY="wss://relay.nsec.app" - same as above
BUNKER_DOMAIN="nsec.app" - same as above
BUNKER_ORIGIN=  where noauth is hosted 

Then run npx prisma migrate deploy to init db, and then run 
node -r dotenv/config src/index.js dotenv_config_path=.env