As snaps have become much more popular and available for many distros, I think it would be a good idea to revisit this issue. I've recently chosen to configure all of my rPis with Ubuntu Core, and having a snap to easily install and configure Pi-hole would make the install on Ubuntu Core much easier.
It's not quite functional yet, but...
Thanks @jacob.salmela for updating here. I can't wait to test this
I know it has been quite a while since this thread was active, but I wanted to share an update for anyone still looking to run Pi-hole on Ubuntu Core.
I’ve been working on a snap for Pi-hole that addresses this exact use case. I'd love to hear any feedback, so feel free to use it and let me know if you run into any issues or have feature suggestions!
Repository: GitHub - rajannpatel/snap-pi-hole · GitHub
Documentation: Home · rajannpatel/snap-pi-hole Wiki · GitHub
Pi-hole snap on Snapcraft: https://snapcraft.io/pihole-by-rajannpatel