Dockerfile correction and add a way to save/load the docker images.
from hdalab.models.categories import (WpCategory, InfoboxParameter, TagInfobox,
TagWpCategory, WpCategoryInclusion)
from hdalab.models.dataviz import TagYears, Country, GeoInclusion, TagLinks, DbpediaFields, HdaSession, InseeCoords, DatasheetExtras, DbpediaFieldsTranslation
from hdalab.models.renkan import HdalabRenkan, HdalabRenkanStateTransition
__all__ = ['WpCategory', 'InfoboxParameter', 'TagInfobox', 'TagWpCategory', 'TagYears', 'Country', 'GeoInclusion', 'TagLinks', 'DbpediaFields', 'DbpediaFieldsTranslation', 'HdaSession', 'InseeCoords', 'DatasheetExtras', 'WpCategoryInclusion', 'HdalabRenkan', 'HdalabRenkanStateTransition']