[Question] Correct way of shutting down DeepCave

I assumed that when I close the deepcave tab and kill the command line application, deepcave would shut down completely but in fact the dash port is still in use and not freed within ~30 mins (not sure when exactly it's freed, actually, I just observed it being taken even quite a while after). Is there a shutdown command of some sort or a way to make this cleaner?
The issue right now is obviously that if I want to restart, I have to change my config to a different port.