old_contents: from dev import *
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.mysql',
          'NAME': 'fcap',
          'HOST': '172.17.0.2',
          'USER': 'root',
          'PASSWORD': '123456',
          'PORT': 3306,
      }
  }
  
  INSTALLED_APPS.extend([
      'authentication',
      'management',
  ])
  
new_contents: from dev import *
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.mysql',
          'NAME': 'fcap',
          'HOST': '172.17.0.2',
          'USER': 'root',
          'PASSWORD': '123456',
          'PORT': 3306,
      }
  }
  
subject: remove app config in local.py config