We have some extensions in the Wikibase bundle that are repo only
- WikibaseEdtf
- WikibaseLocalMedia
By default these are enabled in the wikibase-docker images however if the LocalSettings file is changed to be client only the instance will be put in an error state where it won't load.
There are currently some hacks to go around this during testing, but will likely lead to confusion when someone tries this out for themselves.
Find a way to load these in a better way that works across branches REL1_35 / REL1_36 / master