How to upgrade docker engine?

I have RangerOS 1.5.8 running the way I want, is using CIFS, but I am trying to run Jellyfin on it and i am actually hitting a bug in the current version installed in RangerOS.

What is the procedure to stop the engine and upgrade\ing it? I have tried killing it and replacing its binaries, but it still restarts and locks.

Thanks for any help