We stopped building and publishing new binary releases of the blubber CLI a while back after migrating to blubberoid (its microservice counterpart)... and I see now that the docs on Getting Blubber are not helpful in that they're out of date, still suggesting that people use the binaries. Ok, the first thing I need to do here is update that article.

For your use case, would it make sense for you to use blubberoid.wikimedia.org instead? See Blubber as a microservice in that same article.