nginx: how to create an alias url route?

Question

basically an server instance is running at

somesite.com/production/folder/here?param=here&count=1

I want to point someite.com/demo to /production/folder/here so when user types somesite.com/production/demo?param=here it will work without redirecting to /production/folder/here

Answer 1

server {
  server_name example.com;
  root /path/to/root;
  location / {
    # bla bla
  }
  location /demo {
    alias /path/to/root/production/folder/here;
  }
}

If you need to use try_files inside /demo you'll need to replace alias with a root and do a rewrite because of the bug explained here