Gulpfile images

Gulpfile-pt5.js

// Optimize and copy image files
gulp.task('build:images', function() {
  return gulp.src(paths.imageFilesGlob)
    .pipe(imagemin({ 
        optimizationLevel: 3, 
        progressive: true, 
        interlaced: true,
        use: [pngquant()]
    }))
    .pipe(gulp.dest(paths.jekyllImageFiles))
    .pipe(gulp.dest(paths.siteImageFiles))
    .pipe(browserSync.stream());
});