how to add own DNS provider for DNS challenge?

[hugofant]

Hi,
want to use DNS challenge for the lets encrypt certificates.

My problem: my hoster/dns provider is not on the list. So, how to add him manually?

[jacobemcken]

Some DNS providers are built into Certbot - the service that handles the DNS challange (see all the directories with the name prefix certbot-dns-*:
https://github.com/certbot/certbot

But they don't accept new ones to be added:

The Certbot team is not currently accepting any new plugins
because we want to rethink our approach to the challenge
and resolve some issues like #6464, #6503, and #6504 first.

Source: https://eff-certbot.readthedocs.io/en/stable/contributing.html#writing-your-own-plugin

Obviously, Nginx Proxy Manager supports more than these, and chaptergy hinted how to do it in a comment on Request: add support for Namecheap DNS? #1151:

... a certbot plugin has to be available via PyPi ...

So, if you know how to write some Python code + package and publish it to Pypi, it seems possible.

I'm not proficient with Python, but I assume you would be able to include your package in the file /app/global/certbot-dns-plugins.json (inside the Docker container) afterwards, to make it available in the Nginx Proxy Manager UI.

I am kinda in the same boat myself, because I want to integrate with DNS.services (a fairly small Danish DNS service provider).
I found some Python code specific for DNS providers that I might be able to leverage at some point:
https://github.com/dns-lexicon/dns-lexicon/tree/95f7bd626074b257b88912a15dbf30b506dd8f35/src/lexicon/_private/providers

Here is an example of a plugin that isn't part of the Certbot, but still included in Nginx Proxy Manager:
https://github.com/mwt/certbot-dns-bunny