public function createZip($dest)
    {
        $this->startSection('zip');
        $this->debug("Creating a zip file at $dest");
        $this->createDirIfNeeded(dirname($dest));
        chdir($this->stageDir);
        $this->exec("zip -r $dest ./");
        $this->debug("  > Created at $dest");
        chdir(__DIR__);
        $this->endSection();
    }