FEATURE: add a custom log format for better analysis

config/nginx.sample.conf

@@ -25,8 +25,12 @@ map $http_x_forwarded_proto $thescheme {
   https https;
 }
 
+log_format log_discourse '[$time_local] $remote_addr $request $sent_http_x_discourse_route $upstream_response_time $request_time';
+
 server {
 
+  access_log /var/log/nginx/access.log log_discourse;
+
   listen 80;
   gzip on;
   gzip_vary on;