This is sort of the same answer to your other thread, but from a different angle...
Firstly, the public IP is not static and may change. So I have 2 suggestions:
1. Buy an elastic IP from Amazon, which is something of a static IP (but it is reassignable to different instances...). If you go this way then you'll need to configure your domain host to point your domain at your elastic IP (which is then assigned to the relevant instance).
2. Or add your domain name to the Hub and handle it through Hub DNS. Have a read here.
2 options...
This is sort of the same answer to your other thread, but from a different angle...
Firstly, the public IP is not static and may change. So I have 2 suggestions:
1. Buy an elastic IP from Amazon, which is something of a static IP (but it is reassignable to different instances...). If you go this way then you'll need to configure your domain host to point your domain at your elastic IP (which is then assigned to the relevant instance).
2. Or add your domain name to the Hub and handle it through Hub DNS. Have a read here.