> any build-flow that involves apt-upgrading or apt-installing packages (yes, even Docker builds) has no guarantee that you'll get an equivalent result if you r

> any build-flow that involves apt-upgrading or apt-installing packages (yes, even Docker builds) has no guarantee that you'll get an equivalent result if you rerun it 3 months later. You can ask `apt` to install specific versions of packages. You do have to provide a repository that contains old versions though, e.g. Debian's snapshot archive: https://snapshot.debian.org/ https://snapshot.debian.org/