Get the container's current status from Docker.

        If the container does not exist (before creation and after removal),
        the status is ``None``.

def status(self):
        """
        Get the container's current status from Docker.

        If the container does not exist (before creation and after removal),
        the status is ``None``.
        """
        if not self.created:
            return None
        self.inner().reload()
        return self.inner().status