[howto] Automatic Certificate Renewal with Let's Encrypt and DNS Auth

This is based on the earlier work of airflow in this thread.  Because of the security concerns with exposing your NAS to the whole world even if only via jail, the better and more secure option is to use DNS verification.

Acme.sh by neilpang supports performing DNS verification and automatically updating your...

[howto] Automatic Certificate Renewal with Let's Encrypt and DNS Auth