Manually adding SSL certs in Nginx Proxy Manager

A large part of the reason for my use of Nginx Proxy manager over vanilla NGINX, is that it has built-in Let’s Encrypt certificate requesting and renewing. This works perfectly for all my public facing services, and until recently, my homelab services. Before I dive into how I’ve fixed the problem I ran into, I better explain how my homelab domain is set up, and before I do that, an over-simplified description of how the SSL system works is required