old_contents: from base import *  # noqa
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  DEBUG = False
  
new_contents: from base import *  # noqa
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.sqlite3',
          'NAME': ':memory:',
      }
  }
  INSTALLED_APPS += [
      'django_jenkins'
  ]
  DEBUG = False
  
subject: Add django_jenkins to installed apps