publish official containers to dockerhub or github container registry

[Trolldemorted]

It would make both using sail and creating CI for the models a lot easier

[Trolldemorted]

Do you know whether you will have official images soonish? rems-project/isla#10 is blocking on this, unfortunately.

My project's deadline is approaching, and I have to deliver something that can be tested quickly, and maintain reproducibility. I could create my own images, but would naturally prefer official ones.