Update settings.py config databases for demo and prod

lms/settings.py

@@ -116,14 +116,15 @@ WSGI_APPLICATION = 'lms.wsgi.application'
 # https://docs.djangoproject.com/en/1.9/ref/settings/#databases
 
 DATABASES = {
-        'default': {
-            'HOST': '192.168.0.2',
-            'ENGINE': 'django.db.backends.postgresql_psycopg2',
-            'NAME': 'codemy',
-            'USER': 'team',
-            'PASSWORD': 'nu5Xefise'
-        }
-    }
+    'default': {
+        'ENGINE': 'django.db.backends.postgresql_psycopg2',
+        'NAME': os.environ.get('DB_NAME', 'codemy'),
+        'USER': os.environ.get('PG_ENV_POSTGRES_USER', 'team'),
+        'PASSWORD': os.environ.get('PG_ENV_POSTGRES_PASSWORD', 'nu5Xefise'),
+        'HOST': os.environ.get('PG_PORT_5432_TCP_ADDR', '77.244.221.176'),
+        'PORT': os.environ.get('PG_PORT_5432_TCP_PORT', '5432'),
+    },
+}
 
 
 # Password validation