> I've been making the images reproducible before that with my own tooling I've been doing the same, using https://github.com/reproducible-containers/repro-sou

> I've been making the images reproducible before that with my own tooling I've been doing the same, using https://github.com/reproducible-containers/repro-sources-list.sh https://github.com/reproducible-containers/repro-sources-lis... . It allows you to precisely pin the state of the distro package sources in your Docker image, using snapshot.ubuntu.com & friends, so that you can fearlessly do `apt-get update && apt-get install XYZ`.