Onliner-map Building cat REACT_APP_MAPBOX_TOKEN=<your mapbox api key> .env Example: cat REACT_APP_MAPBOX_TOKEN=pk.eyJ1IddW94536ifQ.xAHiLx6T46573nNVMTgNg .env npm install npm run build Builds the app for production to the build folder The build is minified and the filenames include the hashes.