nginx config files needed

We have a large server (64 core 2048GByte memory) that hosts many virtual machines. Currently we provide client access to the VMs using ssh tunnels and VNC viewer. We wish to migrate this to NoVNC (websockify) on the VMs and nginx on the server. NoVNC on the VM is working fine. This is the scenario we wish to provide: 1. A customer signs up for our product. 2. We create new VM e.g. vm087 3. The new VM has a new IP on the server subnet – e.g. [login to view URL] 4. We create a new nginx config file and drop it in /etc/nginx/conf.d 5. Inform nginx using system command: systemctl reload nginx 6. Send link (URL) to customer who accesses the VM using browser. We have nginx loaded as a service with SSL (openssl) certificates. What should the nginx config files contain?