 0.21.1 did NOT work, falling back to 0.20.3.
 0.21.1 did NOT work, falling back to 0.20.3.

devopscenter/dcStack,devopscenter/dcStack,devopscenter/docker-stack,devopscenter/docker-stack,devopscenter/dcStack,devopscenter/docker-stack,devopscenter/dcStack