docs: function buildImages(conf, undertaker) {
  
      const imageMinConfig = {
        progressive: true,
        svgoPlugins: [{
          removeViewBox: false
        }, {
          cleanupIDs: true
        }, {
          cleanupAttrs: true
        }]
      };
  
      const imageSrc = path.join(conf.themeConfig.root, conf.themeConfig.images.src, '**', '*');
      const imageDest = path.join(conf.themeConfig.root, conf.themeConfig.images.dest);
  
      return undertaker.src(imageSrc)
        .pipe(imagemin(imageMinConfig))
        .pipe(undertaker.dest(imageDest));
  
  }