I do a similar thing at https://blog.kowalczyk.info/ (under "My external brain"), e.g. section on programming: https://blog.kowalczyk.info/article/d61b4f94b10d4d808d3d238a...

I build a custom toolchain to generate it.

All the content is stored in Notion (which is the fastest way I found to write and edit content).

I wrote a Go program (https://github.com/kjk/blog) to convert that to html and deploy as a static site to Netlify, on their generous free plan.

I also generate the rest of the website (mostly blog) from content in Notion.

Since the code is open source, others can adopt it.