HOWTO - What to do for having Nextcloud / OnlyOffice on the same host?

Hello @Nemskiller , @sidr and other users. I finally managed to make it work, notably thanks to the advice on this page, thank you so much! I did a full article to explain the installation so that it’s useful for others. I mentioned this page at the end.
I’d be happy to receive your feedback on it: documentation/onlyoffice_configuration.rst at biva · biva/documentation · GitHub
Thanks!

When I do what you wrote below I get the following error message:

docker: invalid reference format: repository name must be lowercase.
See ‘docker run --help’

I get that error message when I run the last (and long) docker run command at the bottom.

Changing everything to lowercase does not help.

It seems to have helped to put double quotation around the two first strings starting with /app/… At least it stopped complaining.

However, OnlyOffice is still not working, though.