Okay, I must have been restarting the wrong part of Boinc. Upon further inspection Boinc isn't able to access the GPUs inside the Ubuntu docker image, despite vast claiming gpu drivers are installed. Can't remember the specific error message and apparently the log didn't save.
So maybe I need to try the Boinc docker image again regardless.
Not all that experienced in the terminal myself.
Further inquiries tell me that they are behind a firewall, but I should be able to use local port forwarding to theoretically bounce 31416 back to me and make it available using PuTTY? Have never done that before.
Sometimes I'm too stubborn for my own good...