Hello Daniel, thank you very much for this article. It helped me a lot right now as I am reinstalling my banana pi with pihole and an orbsmart minipc to run a couple of docker-hosted services on my own. And I was always struggling with a local domain name. The pihole by default uses ".lan" which was never appealing to me. I was looking around countless articles, but after I filtered my search to show my articles not older than one year, yours popped up and helped me out a lot. Thank you so much.
I hope it is ok for you, if I translate your article into German and post it on my blog with a backlink here.
Thanks again and cheers.
p.s. added your blog to my feed reader. So nice