Reported in wikibase telegram.
I cloned the wikibase-docker repository today and started it up with 'docker-compose -d'. I haven't added any properties or items yet, but when I go to the query service UI on port 8282 and run a query it returns data from Wikidata instead. Is it OK ask about things like this on this channel?
It sounds like the code for the wdqs front-end in terms of where or how things are configured has changed and the code in wikibase-docker doing thsi configuration needs updating.