Multiple upstream domains to multiple apps

[davidhaley]

I am wondering if it is possible to proxy requests like:

(singular nginx-proxy below)

upstream subdomain A -> nginx-proxy -> App A
upstream subdomain B -> nginx-proxy -> App B

This is the nginx.tmpl file: https://github.com/researchspace/researchspace-docker-compose/blob/master/full-setup-with-lets-encrypt/nginx/nginx.tmpl

Thank you.