dockerImage.nix

  crank-docker = nixpkgs.dockerTools.buildImage {
    name = "crank-docker";
    fromImage = nixpkgs.dockerTools.pullImage {
      imageName = "alpine";
      imageTag = "3.6";
      sha256 = "1sd6p2k3d1dw6apkcj25m5kpkih83jiikgvbzxsqnlfy2y9gyphr";
    };
    contents = [
      crank
      nixpkgs.pkgs.cacert
    ];
    config.Cmd = [ "${crank}/bin/crank" "run" "--config" crank-config ];
  };