On container startup, following warning is thrown:

/var/lib/graphite/webapp/graphite/settings.py:244: UserWarning: SECRET_KEY is set to an unsafe default. This should be set in local_settings.py for better security warn('SECRET_KEY is set to an unsafe default. This should be set in local_settings.py for better security')

This is due to installation of python-django >= 1.5, which expects SECRET_KEY to be set.