Thanks for posting with further detail and feedback on the instructions that I gave.
FWIW, I don't think option 3 will work either as I've since discovered that NextCloud will not allow you to run the update script as root. I'll update the OP and strike that out.
Awesome! :)
FWIW, I don't think option 3 will work either as I've since discovered that NextCloud will not allow you to run the update script as root. I'll update the OP and strike that out.