Webmin redirect

Hi

I have successfully installed Webmin, which I access on xxx.xxx.xxx.xxx:10000. I am unable to log in using a domain name, and I assume that is because there is a web site for the domain on port 80.

Webmin is installed in /etc/webmin and /var/webmin

How do I configure nginx to redirect to Webmin on port 10000?

TIA