修复celery时区问题

Signed-off-by: 木子-李 <1537080775@qq.com>

backend/application/__init__.py

@@ -0,0 +1,5 @@
+# This will make sure the app is always imported when
+# Django starts so that shared_task will use this app.
+from .celery import app as celery_app
+
+__all__ = ('celery_app',)

backend/application/celery.py

@@ -15,7 +15,7 @@ else:
     from celery import Celery
 
     app = Celery(f"application")
-app.config_from_object('django.conf:settings')
+app.config_from_object('django.conf:settings', namespace='CELERY')
 app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
 platforms.C_FORCE_ROOT = True