No working sample script of the docker image

[carlosal1015]

Hi, I do not know, but the execution of the sample is not working.

>>> from ghost import Ghost
>>> ghost = Ghost()
>>> with ghost.start() as session:
...     page, extra_resources = session.open("http://jeanphix.me")
...     assert page.http_status == 200 and 'jeanphix' in page.content
... 
Segmentation fault (core dumped)