[fixes GeoNode#11734] standing up docker compose stack on a port diff…

…erent than 80

This preserves port information, which is useful for having correct links being generated by the GeoNode API

scripts/docker/nginx/geonode.conf.envsubst

@@ -105,7 +105,7 @@ location / {
   add_header Access-Control-Allow-Methods "GET, POST, PUT, PATCH, OPTIONS";
 
   proxy_redirect              off;
-  proxy_set_header            Host $host;
+  proxy_set_header            Host $http_host;
   proxy_set_header            Origin $HTTP_SCHEME://$host;
   proxy_set_header            X-Real-IP $remote_addr;
   proxy_set_header            X-Forwarded-Host $server_name;