Please follow these steps:
download the zip and extract it.
Folder "src" contains source code of the app. "config", other folders and files are mainly for configuration purposes.
Folder "dist" contains production ready minified version - this can run by this command:
npm run server:prod
for building and run develop is needed:
npm install
npm start
for building and run production ready version is needed:
npm install
npm run build:prod
npm run server:prod