mjml-boilerplate with 3.2.2 beta

[Laslo89]

is it possible to run the boilerplate with the latest beta version?

"mjml": "~3.2.0-beta.3",
"mjml-column": "~3.2.0-beta.2",
"mjml-core": "~3.2.0-beta.2",
"mjml-image": "~3.2.0-beta.2",
"mjml-section": "~3.2.0-beta.2",
"mjml-text": "~3.2.0-beta.2",

I added the latest version myself and modified a view things in the compile function inside the gulp file.
I added the --output param
I added error notification
see below:

const compile = () => {
  gulp.src('components/**.js')
    .pipe(babel())
    .pipe(gulp.dest('lib'))
    .on('end', () => exec(
      './node_modules/.bin/mjml index.mjml --output index.html',
      (err, stdout, stderr) => {
                // NOTE: logs errors of gulp (we think at least)
                if (err) {
                    console.log('ERROR:\n', err); // eslint-disable-line no-console
                }

                // NOTE: logs the error message of our own code
                if (stdout && stdout.trim()) {
                    console.log('CODE INFO:\n', stdout); // eslint-disable-line no-console
                }

                if (stderr) {
                    console.log('CODE ERROR:\n', stderr); // eslint-disable-line no-console
                }
            }
    ));
}

when i run npm run build i run into this error:

ERROR:
 { [Error: Command failed: /bin/sh -c node_modules/.bin/mjml index.mjml --output index.html
]
  killed: false,
  code: 1,
  signal: null,
  cmd: '/bin/sh -c node_modules/.bin/mjml index.mjml --output index.html' }
CODE INFO:
 Error: EISDIR: illegal operation on a directory, open './'
    at Error (native)

I saw some changes in the cli, which i think are causing that error, but i couldn't relate them exactly. Maybe the boilerplate has to adapt to the newer version?

[ngarnier]

hey @Laslo89, I moved your issue here as it's related to the boilerplate and not MJML