This post actually solved my problem too:
https://forums.inedo.com/topic/3402/proget-on-rootless-docker-cannot-switch-port/3
Specifically setting this env variable: ASPNETCORE_URLS: 'http://*:8181'

So this is on linux box. I'm running the docker container in firecracker. So, where in linux would the respective path C:\ProgramData\Inedo\SharedConfig be? I see the software is under /usr/local/proget.

Hello,
I got the latest proget and I'm trying to run with ProGet.Service run --mode=both --urls=http://0.0.0.0:81 port and it always defaults to 172.0.0.1:5000 no matter what I define in the --urls. How do I change the listening IP and port ?

Thanks.