I am running a few instances now. They are all at the latest versions.

I run them on NixOS. Nextcloud is run manually not with the Nix module and onlyoffice is run via the docker image. 

Sovran_SystemsOS has it already build it. However, to run onlyoffice I have custom .nix file not in the repo.

https://git.sovransystems.com/Sovran_Systems/Sovran_SystemsOS