good to hear. I will create a script that people can run when the docker is updated.
1. Not sure why. As mentioned before I just made the simple template, digiinc did the hard work. It might be worth checking the github for it https://github.com/diginc/docker-pi-hole. (reminds me that I need to see if the bug for debian was fixed)
2. The script will need to be run again as it modifies the docker rather than being just data
3. I dont, sorry.