Use http_host

Signed-off-by: Tommy <contact@tommytran.io>

etc/nginx/snippets/proxy.conf

@@ -23,5 +23,5 @@ proxy_set_header   Connection "upgrade";
 
 # Enable X-Forwarded headers
 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-proxy_set_header X-Forwarded-Host $host;
-proxy_set_header X-Forwarded-Proto $scheme;
+proxy_set_header X-Forwarded-Host $http_host;
+proxy_set_header X-Forwarded-Proto $scheme;