fix database settings

cp_video/settings.py

-"""
-Django settings for cp_video project.
-
-Generated by 'django-admin startproject' using Django 3.0.6.
-
-For more information on this file, see
-https://docs.djangoproject.com/en/3.0/topics/settings/
-
-For the full list of settings and their values, see
-https://docs.djangoproject.com/en/3.0/ref/settings/
-"""
-
 import os
 import environ
 import sys
@@ -93,10 +81,10 @@ if DEVELOPMENT_MODE is True:
     DATABASES = {
         'default': {
             'ENGINE': 'django.db.backends.postgresql_psycopg2',
-            'NAME': 'cp_video',
-            'USER': 'postgres',
-            'PASSWORD': 'postgres',
-            'HOST': '127.0.0.1',
+            'NAME': env('DATABASE_NAME'),
+            'USER': env('DATABASE_USER'),
+            'PASSWORD': env('DATABASE_PASSWORD'),
+            'HOST': env('DATABASE_HOST')
         }
     }
 elif len(sys.argv) > 0 and sys.argv[1] != 'collectstatic':