[Q] Custom zip how to create a /data/app folder?

I have created a rom zip file with Archi Kitxhen and it Works well, the dir inside the zip file are:
/META-INF
/system
boot.img

I want to add /data/App and be able to fill up with apps that will be in /data/App automaticaly after flashing.
How can I do it manualy?
I tried Android Kitchen in Linux but my rom dont flash after using it
In /META-INF/com/google/android I have:
update-binary
updater-script

Thank you for the help