var DockerHub   = require('docker-registry-downloader').DockerHub;
var Syncronizer = require('docker-registry-downloader').Syncronizer;
var dockerHub   = new DockerHub();
var syncronizer = new Syncronizer();

syncronizer.initialize().then(function() {
  var namespace   = 'azukiapp';
  var repository  = 'azktcl';
  var tag         = '0.0.2';

  // get token from Docker Hub API
  dockerHub.images(namespace, repository).then(function(hubResult) {
    // check local layers with Docker Registry API
    return syncronizer.getLayersDiff(hubResult, tag).then(function (result) {
      console.log(result);
    });
  });
});