Using Docker to run a tool intended for home-use (i.e. not on a server) for 'educational purposes' is like learning to shave your bikini line by cutting the neighbourhood hedges.
Not only 'learning Docker' is a pretty solid reason, it's not even that bad an idea. I have spun up containers for simpler stuff, like when I couldn't install a certain library because Anaconda messed up the install of a dependency which depended on native code.
I would say the risk reward on these two are a little bit different. With using Docker on something you are just trying out you risk wasting some time and maybe some abuse from stephenr on hackernews.
Practicing shaving your bikini line with hedgeclippers you stand to lose... well a lot more.