How to have jupyter notebook running on GCP even if I close my browser or local computer


I deployed a server with Ubuntu on GCP and with fastai at:

For some long trainings, I would like to make the jupyter notebook run also in case my browser or local computer are turned off.
I read that something like that it is possible to do it with screen or tmux but so far I did not figurate exactly how to do that.

Can somebody explain me how to do that with any appropriate tool?

I also posted this here: Platform: GCP ✅ but maybe it is better to create a separate topic for this