docs: function(cmd) {
  
      // Return file(s) we need to check for
      switch (process.platform) {
        case 'darwin':
          return ['open', '/Applications/Docker.app'];
        case 'linux':
          return ['sudo', 'service', 'kalabox'].concat(cmd);
        case 'win32':
          var base = process.env.ProgramW6432;
          var dockerBin = base + '\\Docker\\Docker\\Docker for Windows.exe';
          return ['cmd', '/C', dockerBin];
      }
  
    }