nginx config your websites' favicon

        1. vim nginx.conf
        # set site favicon
        location /favicon.ico {
            root html;
        }

       2. place a favicon.ico file under html/

       3. optional, add below codes to your index.html.
<link rel="icon" href="/favicon.ico" mce_href="/favicon.ico" type="image/x-icon">
<link rel="shortcut icon" href="/favicon.ico" mce_href="/favicon.ico" type="image/x-icon">    

        # set site favicon
        location /favicon.ico {
            root html;
        }