@alpha1974
As I mentioned earlier in this thread, the image is a basic one with just Luci added and WiFi enabled.
the make image command is as follows:
make image PROFILE=gl-ar300m PACKAGES="base-files luci " FILES=files/
You can of course add all the packages you require in your image to this line.
Don’t forget to add the uci-defaults folder and the WiFi enabling UCI file to your files folder 
You can add your own custom code or data folders/files to the files/ folder in the Imagebuilder.
Note: After installing the Imagebuilder you have to create the files/ folder and point to it in the image command line as I have done above.