[atmosx]

You have a static IP?

[themodelplumber]

You can use a client to update the record of your dynamic IP. I don't know if that's what he's doing, but it's in all the Pi web hosting tutorials.

[atmosx]

The solution you propose is problematic as you'll have random redirection problems even if your script updates your DNS every 15 seconds.

[nodejs-news]

Yes a have a static ip, but DynDns like service providers works too. I use then for years, before my DSL provider gave me one :)