- This also fixes a regression with Celery not finding its broker in the worker
container, by adding a dedictad variable and assigning a separate Redis database /1.
Some issues were complaining about corruptions in the Celery database, which
might have come from reusing the same /0 database as Django cache and queue.
- Renames the celeryworker container to just worker.
This partly undoes 4ee6190cc1
jon r