{
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs =
    { self
    , nixpkgs
    , flake-utils
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs { inherit system; };
        app = pkgs.callPackage ./app.nix { inherit pkgs; };
        deps = with pkgs; with perlPackages; [
          perl JSON LWP LWPProtocolHttps PathTiny
        ];
      in
      with pkgs; {
        packages.docker = symlinkJoin {
          name = "docker";
          paths = [ perl app ];
          meta.priority = 5;
        };
        devShells.default = mkShell { buildInputs = deps; };
      }
    );
}