var url = "mongodb://0.0.0.0:27017/surveydb";

ip地址是仅在您的nodejs容器中，因此您应该知道什么是mongo容器的ip地址或分配给容器的ip地址网关.

is ip adddress is in your nodejs container only, so you should know what is ip address of mongo container or assign to ip address gateway of containers.

var url = "mongodb://172.17.0.1:27017/surveydb";

或

var url = "mongodb://ipaddressofmongocontainer:27017/surveydb";