pre-installing some apps

[dirkhh]

I am wondering about a better way to automatically install some applications during image build time.
Right now it seems that the workflow to auto-install apps is to edit the dietpi.txt file and have it install them on first boot. But depending on SBC speed (and internet speed) that can take a VERY long time during first boot. I've seen a 20 minute first boot when auto-installing the ADS-B Feeder and its dependencies on a Pi Zero 2.

I think it would be really nice if I could create custom images using the image builder and install apps at that point - but then not mess with the rest of the normal boot process (so still allow people to setup their wifi using the FAT partition, still doing the initial updates, etc). Reading the code it seems that this isn't something that could easily be implemented today... but is this a feature that would be reasonable? I could of course hack the build script, but then the apps would not be installed in the same way as dietpi-software does it, and I worry that that could cause problems down the road...