anchor.diff:      iana-etc
       git
       openssh
  -  ];
  +  ] ++ extraPkgs;
   
     users = {
   
  
positive.code: in
  pkgs.dockerTools.buildLayeredImageWithNixDb {
  
    inherit name tag;
  
    contents = [ baseSystem ];
  
  
negative.code: , tag ? "latest"
  , channelName ? "nixpkgs"
  , channelURL ? "https://nixos.org/channels/nixpkgs-unstable"
  , extraPkgs ? []
  , maxLayers ? 100
  }:
  let
    defaultPkgs = with pkgs; [
  