Current and accurate build guide WANTED, Please

[sponix]

I need to have this up with the most current version and running on Ubuntu 16.04 native, or in docker.
Only instructions I've found on building this referrer to a "next" branch that doesn't exist that reference building from directories inside that branch that don't exist in the master.

One user in the issues says: I managed to get it up and running via the readme in the /app folder.

But I attempted to follow that README in there also, and that build errors out horribly for me.

npm itself is new to me, I've noticed it likes to require sudo. But have also seen "permission errors" when running it both sudo or even regular root. And I find that odd to say the least.

Getting ready to give this a try on the newer Ubuntu 18.04 to see if I have better luck. If that works out I can at least do it into a docker container that way on regular 16.04.

Any and all help is greatly appreciated,
sponix