anchor.diff:      }:
       let
   
  -      self_docker = mkDocker {
  -        inherit name version;
  -        contents = [ busybox self ] ++ dockerContents;
  -        config =
  +      self_docker_config =
             { Env = [
                 "APP_NAME=${name}-${version}"
                 "PATH=/bin"
  
positive.code:         inherit name;
          tag = version;
          fromImage = self_docker;
          runAsRoot = ''
            cp -a ${self.src}/* /app
            cat > /app/version.json  <<EOF
            ${builtins.toJSON version_json}
  
negative.code:     , version
      , config ? {}
      , contents ? []
      , runAsRoot ? null
      }:
      dockerTools.buildImage {
        name = name;
  