How to package a intellij community installer?

Hi, guys
I want to build intellij community myself, and I followed instructions provided here(Check Out & Build Community Edition, This is the only build material I can find). Now I build successfully in my intellij and run without problems. But how can I collect all the necessaries for running and package them as a installer?
ps, I don't know whether this is the correct place to ask such question, but I cann't find a suitable location.
Any help would be appreciate!