Allow nginx parameters *after* proxy.conf include

Is your feature request related to a problem? Please describe.
In a proxy scenario, occasionally we need to rewrite HTTP headers explicitly. For example I may host "mySite.proxy.company.com" and I want it to forward to an internal site "mySite-internal.company.com" . The server at "mySite-internal.company.com" does not respond/allow the CN of "mysite.proxy.company.com" and so it needs to be manually changed.

adding a line like this to the site conf file after the include /etc/nginx/conf.d/include/proxy.conf; line would allow or this:

proxy_set_header Host myHostName.myDomain;

Currently the Custom Nginx Configuration dialog only allows for custom configurations before the include of proxy.conf. Please add support for site-specific includes after proxy.conf as well.

Great job on this project by the way!!!

Start by tracing how the Custom Nginx Configuration dialog is rendered into site configuration and where /etc/nginx/conf.d/include/proxy.conf is included. Check the configuration-generation path for a site-specific include after proxy.conf. Done means a custom directive such as proxy_set_header Host can be placed after the shared include for one site.