This website!
It is build with Jekyll (a Static Site Generator) and deployed using GitLab pages.
I started with the Prologue template but had to do some HTML and CSS trickery to get things looking the way I wanted. Other than that, Jekyll makes it very easy to add new content once the whole system is working, so hopefully I will remember to keep it updated!
It was also my first time experimenting with GitLab’s continuous integration tools, and probably not my last.