build arguments for command.

def _build_arguments(self):
        """
        build arguments for command.
        """
        self._parser.add_argument(
            '--attach',
            type=bool,
            required=False,
            default=False,
            help="Attach to containers output?"
        )

        self._parser.add_argument(
            '--clean',
            type=bool,
            required=False,
            default=False,
            help="clean up everything that was created by freight forwarder at the end."
        )

        self._parser.add_argument(
            '--configs',
            type=bool,
            required=False,
            default=False,
            help="Would you like to inject configuration files?"
        )

        self._parser.add_argument(
            '-e', '--env',
            required=False,
            type=str,
            action='append',
            default=None,
            help='environment variables to create in the container at run time.'
        )

        self._parser.add_argument(
            '--test',
            type=bool,
            required=False,
            default=False,
            help="Run tests."
        )

        self._parser.add_argument(
            '--use-cache',
            required=False,
            action='store_true',
            default=False,
            help='Allow build to use cached image layers.'
        )