DuckDNS in Qnap Docker

I need help.

Several weeks ago I entered in the world of Home Assistant and I am delighted with the capabilities.

I associate Smartthings, Shelly, eWelink and other integrations.

In order not to use Nabu Casa I want to use SSL and DuckDNS, but I can’t find out how to install and configure it.

I see many explanations with HOSSIO and Supervisor, but none with Docker and Qnap, or anything like that.

Is it possible on Qnap / Docker, or do I really have to use Nabu Casa or have to use a raspberry pi?

Thank you for your help