Hi selfhosted, I made a short tutorial for anyone who might want to dive into arr selfhosted software but dont know where to start. I did it on my RPI but docker config will work in any docker friendly environment so adjust it to your scenerio. I will gladly discuss that topic so fell free to talk.
I believe you can just set vpn in qbittorrent, but Im not sure is it acting like real kill-switch or you are risking your home IP leak. So not recommended probably. If you go recommended docker way, you can do it easily with gluetun. There must be many other options out there, but be careful, not all of them are acting like a real kill switch.
Anyway, tell your friend its not hard to start with docker, you need portainer and youtube 😜