As a newcomer who plays with the docker-compose file, I installed Wikibase through the 'command-line-magic' docker-compose up,
Then I would like to feed/populate some wikibase items with fixtures sample data out-of-the-box.
ie. docker-compose exec wdqs ./populateFixtures.sh
Those items could come from a canonical dump (ie. items sample from wikidata)
or items from your own dump (ie. ttl or ndjson)
Related repos to manually workaround this issue (involving php and pip) (thx to @Addshore for the help provided)