old_contents: import os
  from pymongo import MongoClient
  
  __author__ = 'qingfeng'
  
  THEME = 'default/'
  client = MongoClient('mongodb://%s:%s@%s:%s/' % (
      os.getenv('MONGODB_USER', 'user'), os.getenv('MONGODB_PASS', 'mypass'),
      os.getenv('MONGODB_PORT_27017_TCP_ADDR', '192.168.99.100'), os.getenv('MONGODB_PORT_27017_TCP_PORT', '27017')))
  
new_contents: import os
  from pymongo import MongoClient
  
  __author__ = 'qingfeng'
  
  THEME = 'default/'
  client = MongoClient('mongodb://%s:%s@%s:%s/sitenav' % (
      os.getenv('MONGODB_USER', 'user'), os.getenv('MONGODB_PASS', 'mypass'),
      os.getenv('MONGODB_PORT_27017_TCP_ADDR', '192.168.99.100'), os.getenv('MONGODB_PORT_27017_TCP_PORT', '27017')))
  
subject: update db