Hi @jeff-williams_1864 ,
I'm not quite sure why nuget.org would report using a self-singed certificate? That seems off, but it sounds like you're doing "something" with regards to certificates that I don't quite understand :)
On that note, the /usr/local/share/ca-certificates volume store the certificates to be included in the container's certificate authority, which is used when connecting to a server with self-signed certificates: https://docs.inedo.com/docs/installation/linux/docker-guide#supported-volumes
Hope that helps,
Alana