Fix DB connection issue

app/preports/settings.py

@@ -82,7 +82,7 @@ DATABASES = {
         'ENGINE': 'django.db.backends.postgresql',
         'USER': os.getenv("DB_USER"),
         'PASSWORD': os.getenv("DB_PASSWORD"),
-        'HOST': 'db'
+        'HOST': 'preports-db'
     },
 }