I, too, am having issues getting the UNMS docker to work, though mine are when I try and use an external domain and reverse proxy to reach UNMS:   First, you can find some more information on my issue here (trying to crosspost as I'm not strictly sure of where the issue is arising from): link   Short version is: I have the LSIO Let's Encrypt docker (tried it with the NGINX Proxy Manager one as well) running and working (serving other dockers externally).  I also have the oznu