[rascul]

I disagree with that as a hard rule and with the opinion that it's an anti-pattern. Reproducible containers are fine, but not always necessary. There's enough times when I do want to run apt-get in a container and don't care about reproducibility.

[mikedelago]

I agree with your opinion.

Reproducible can sometimes be a goal, but repeatable is always important.

I do think for this case specifically (base images for a specific distro), they should be reproducible.