Using docker to build Read the Docs
I started working on a old side-project that was using an out-of-date version of IdentityServer (2.0.0). Rather than jump two major versions, I decided to go slowly, use this as a learning exercise, and go to the highest major version I could find (2.5.4).
Unfortunately the online docs didn't have 2.5.4, so I decided to build them myself. As always, I didn't want to install a lot of stuff that would be used just once. Another perfect scenario for docker.