Thank you both.
Yes, flatpack is a repository that is taking a lot of force in practically all Linux distributions. Either by terminal or GUI the repository can be added. Debian 10 will bring flatpack if I'm not wrong, snap is more Ubuntu.
I'm in Emby's beta program, and in terms of server it's better that way, I've done it for a couple of years and actually the beta is very stable, with one thing or another, but nothing that they do not solve in question of hours.
In any case what really worries me is installing it in docker and then the plugins stop having OMV support with the new OMV version.
I do not use Emby as a player on the server, ever. I only use the WebUI for the configurations and the libraries, playlists and those things. I have Emby to use it in the different Emby clients that I have in my house and without external access.
On some devices I can use the SMB or the mini DLNA ->(another plugin and I'm worried that it will run out of support on v5)
In short, that is the reason for my question.
Thank you very much in advance.