I haven't heard of anything getting a Docker-related headache because it delegates reproducibility to whatever tools you pick. We haven't been bitten by it, and

I haven't heard of anything getting a Docker-related headache because it delegates reproducibility to whatever tools you pick. We haven't been bitten by it, and you might think I have not tried, but you'd be wrong and making some odd assumptions. Perhaps I can assume that you have only used nix personally or at a small company?