code: func Connect() {
  	uri := os.Getenv("MONGODB_URL")
  
  	if len(uri) == 0 {
  		uri = MongoDBUrl
  	}
  
  	mongo, err := mgo.ParseURL(uri)
  	s, err := mgo.Dial(uri)
  	if err != nil {
  		fmt.Printf("Can't connect to mongo, go error %v\n", err)
  		panic(err.Error())
  	}
  	s.SetSafe(&mgo.Safe{})
  	fmt.Println("Connected to", uri)
  	Session = s
  	Mongo = mongo
  }
docs: // Connect connects to mongodb