node.MozJpeg.wrapper.js

const glob = require("glob")
const util = require('util');
const exec = util.promisify(require('child_process').exec);

// Updte with your image path
const yourImagesPath = "/home/mobileui/app/wp-content/uploads/2018/01/*.jpg";

glob(yourImagesPath, {}, function (er, files) {
  
  if( er ) throw new Error( er );
  
  if( files.length === 0) throw new Error( 'No Files found' ); 


  files.forEach( path => {
    
    // Be sure that "cjpeg" is in your path 
    exec(`cjpeg -quality 60 -outfile ${path}.min.jpg -optimise ${path}`)
      .then( res => console.log(`Compression OK : ${path}`))
      .then( res => exec(`mv ${path}.min.jpg ${path}`))
      .then( res => console.log(`Renaming OK : ${path}`))
      .catch( stderr => console.log('Error ', stderr))
      

  });


})

You have to install glob

npm install glob