fix: add X-Original-URI header for Anubis

This allows URL based matching, even though this is not documented, see
TecharoHQ/anubis#1245.

Author: nijel

etc/nginx/default.tpl

@@ -37,6 +37,7 @@ server {
         proxy_set_header X-Real-IP $remote_addr;
         proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header Host $http_host;
+        proxy_set_header X-Original-URI $request_uri;
         proxy_set_header X-Forwarded-Host $http_host;
         proxy_pass_request_body off;
         proxy_set_header content-length "";