HN has motivated me to start writing stuff down and publish it. (thx ^^) I started about 16 months ago and it has been a great experience.
The site is based on MkDocs [1] with Material [2] theme built using GitHub actions (and various other services; see GitHub readme [3])
[1] https://www.mkdocs.org
[2] https://squidfunk.github.io/mkdocs-material
[3] https://github.com/FullByte/FullByte.github.io