image files pasted in ./img directory are not compressing neither moving to ./dist/img

I've look at gulpfile.js and saw there wasn't a gulp.watch for this behavior, there is one commented line regarding this but when uncommented launch an error:

// gulp.watch('**/*', {
  //   cwd: './img/'
  // }, ['img-compression']);

So I create one and now seems to be working:

gulp.watch('img/**/*', gulp.series('img-compression', (done) => {
    browserSync.reload();
    done();
  }));