I've finished (again) the first chapter today
I've played with cloud saves using all my pcs: at home, with my notebook and sometimes in my office during the weekend
It's sad to see that this one hasn't cloud saving
Is there someting to do?

In theory, you can put your game in a network shared folder, then "map network drive" to it. When you play it and save, any other computer can then use that folder for "c:" in dosbox and should be able to run the game from it.

If they can't run it from that network folder, you can download the save file to your new computer and use it there. When you make progress, upload the new save to the shared folder/network drive.

I've solved using a usb drive and importing the folder in gog galaxy