def onStart(self, event):
        """
        Display the environment of a started container
        """
        c = event.container
        print '+' * 5, 'started:', c
        kv = lambda s: s.split('=', 1)
        env = {k: v for (k, v) in (kv(s) for s in c.attrs['Config']['Env'])}
        print env