Comment 2 for bug 1765628

note that we have the ability to build unified UbuntuCore images, but to my knowledge nobody works on support for this in classic ubuntu images (server/desktop) ...

the source for the Core gadget is at

https://github.com/ogra1/pi-kiosk-gadget

more details are at:

https://forum.snapcraft.io/t/rfc-single-universal-raspberry-pi-gadget-and-image/6634

a demo appliance image (for a digital signage demo) using this setup can be found at:

http://people.canonical.com/~ogra/snappy/kiosk/dashkiosk-server.img.xz