One of our vendors publishes a 70GB docker image as their SDK. It's awful.

That is horrendous. I'm assuming it contains some kind of giant dataset in its entirety?

No datasets. Most of the size is just apt packages and tools bundled into the layers. Around 5GB are "useful" things, and another 15GB are a couple of arguably justified tarballs (only one of which is needed).

That's even more infuriating. Just sheer incompetence wasting your valuable space and bandwidth.