celery cannot connect to postgresql

[HabibulloH]

what is wrong?

my postgresql database incide docker

my celery.py

from celery import Celery

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'root.settings')

background_worker = Celery('root')
background_worker.conf.broker_connection_retry_on_startup = True
background_worker.config_from_object('django.conf:settings', namespace='CELERY')
background_worker.autodiscover_tasks()

[Asif Saif Uddin]

you are trying to use a discontinued package.

[HabibulloH]

@auvipy which package discounted?