I think the keyword for that phrase is "reliable". Overtime, I had to go back to fix "working" base images that had become stale, and when dealing with layers

I think the keyword for that phrase is "reliable". Overtime, I had to go back to fix "working" base images that had become stale, and when dealing with layers and layers of base images this really gets tedious. BTW, I haven't dealt with nix generated images in production, I'm not aware of possible drawbacks (other than people not being familiar with nix), so I'm not really endorsing it, although I would like to try.