Angular Visual studio build system to CLI system.

Question

I have an ASP MVC WebAPI Webapplication project with front end in angular 4, by including app component in index.cshtml. Its building and running from visual studio itself. Issue is Authentication using adal service is taking over 3 minutes. In addition to that loading js,css files are taking much of time that reduced with bundling. Learnt that permanent solution for all is Converting to CLI build system. Can anyone guide me how to this?