How to do map variables for nginx through ispconfig?

I am trying to setup a proxy for headscale through ispconfig.
The documentation I following is as follows.
https://headscale.net/stable/ref/integration/reverse-proxy/?h=proxy#nginx
I get error when add the following in the website options in ispconfig.

Code:

map $http_upgrade $connection_upgrade {
    default      upgrade;
    ''           close;
}

The following is accepted without error in the website options.

Code:

    location / {
        proxy_pass http://<IP:PORT>;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection $connection_upgrade;
        proxy_set_header Host $server_name;
        proxy_redirect http:// https://;
        proxy_buffering off;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
        add_header Strict-Transport-Security "max-age=15552000; includeSubDomains" always;
    }

I got it to work by going in command line to the nginx config and adding the map config on top of the nginx configuration for the website.
My question is, is there a way to add the map config through the ispconfig web ui?
So that the config will stay when we save the setting in the future.

 

Thank you for the advice. Good to know this.

 

perhaps you can edit the nginx main server config to add an include statement, or edit the nginx vhost template (after copying it to /usr/local/ispconfig/server/conf-custom/ and put an include statement in there before the server block...

see the final couple of answers... https://serverfault.com/questions/351710/how-do-you-conditionally-include-files-in-nginx-vhost

 

This is a cool idea. I did not think about it. I will test it out.
Thank you for sharing this idea. I do appreciate it.