HTTPS proxy_pass not working with nginx

[cgmyes]

I have a CentOS 7 VM running on hyper V. I have the FaxServer running through docker-compose as described in the readme file. I have NGINX installed on the Centos server with a Certbot created SSL cert. My ports are forwarded on firewall. If you access via 8080, the server works fine. If you access via 443, NGINX loads: "NGINX error! The page you are looking for is temporarily unavailable. Please try again later.", but with the correct SSL certificate.

In my nginx.conf, i have "proxy_pass http://127.0.0.1:8080;" under the default location. However, it is not passing through to the docker container. How can this be resolved?