fix reports nginx config to avoid localhost issues

fixes galaxyproject/galaxy#15966
by applying patch from @jdwhatsup from
jdwhatsup@c88b756

topics/admin/tutorials/reports/tutorial.md

@@ -32,17 +32,6 @@ requirements:
 
 The reports application gives some pre-configured analytics screens. These are very easy to setup and can help with debugging issues in Galaxy.
 
-> <warning-title>Currently Broken, Requires Separate Domain</warning-title>
-> Reports does not work, under a path prefix (the default setup that most
-> people will use.) It is completely broken and the developers have no plans to fix it in the near term.
-> See
-> [galaxyproject/galaxy#15966](https://github.com/galaxyproject/galaxy/issues/15966) for more details.
->
-> However, it should still function with a separate domain, if that is possible
-> for your setup. Otherwise, it **will not work.** If you wish to follow this
-> tutorial, please be aware of this.
-{: .warning}
-
 > <agenda-title></agenda-title>
 >
 > 1. TOC
@@ -121,6 +110,8 @@ The reports application is included with the Galaxy codebase and this tutorial a
 >    +
 >    +	location /reports/ {
 >    +		proxy_pass http://{{ galaxy_config.gravity.reports.bind }}:/;
+>    +      proxy_set_header X-Forwarded-Host $host;
+>    +      proxy_set_header X-Forwarded-Proto $scheme;
 >    +	}
 >    +
 >     }