I'm not sure if I didn't find the documentation or if this is not possible. I would like to enable rendering of images and maps in a Wikibase instance. Reading this task T184933 I tried by setting
$wgWBRepoSettings['useKartographerGlobeCoordinateFormatter'] = true;
but this didn't work out. For images I have no clue.
I would also vote for putting this as default configuration in the wikibase-docker ; )