How to make my own electron app run ?

Hi,

I was able to run this on my pi and show the demo app. Now... how to I get it to run my app ?

The readme says  "n your dockerfile, copy any working electron /usr/src/app and it should work out-of-the-box on you Raspberry Pi." but I am really unsure what this means.

Thanks for the project and any hints to a noob.