[Answered ]-GeoDjango with Docker error: 'DatabaseOperations' object has no attribute 'geo_db_type'

Solved! This was due to another configuration overriding the DB settings. I was very adamant that it was not a configuration issue, and I’m sorry. I verified this by running the admin shell in the running django app and checking settings.DATABASES. (The other override was django-prometheus, if you’re curious.)