Running the wordpress site on port 8080 behind the proxy running on port 80

I have a wordpress site running on port 8080 and lying behind the reverse proxy nginx server running on 80. In the wordpress settings, I've changed the URL of the site to "" and everything works fine. But the problem is that the URLs displayed on the publications contain an 8080 port number, which I do not want. How can I solve this problem?

I am dying to solve this problem. Note that if I change the URL of the site to "", an overflow problem occurs. So please let me know how to solve this problem.