My React app is currently being served on a server by first building the React app, then using serve to serve the files.
cd path/to/reactapp
yarn build
serve -s build/ -l 80
However, when I do a git pull to get updates and then rebuild using yarn build command, going to the website URL will show a page of files.
What is the correct way to update/rebuild the React app and still avoid temporarily showing the page of files?