To mimic three physical machines I set up three docker-machines.
$ machine create -d virtualbox dev
$ machine create -d virtualbox dev2
Should look like this at the end...
$ machine ls|grep virtualbox
mbp - virtualbox Running tcp://192.168.99.100:2376
dev - virtualbox Running tcp://192.168.99.101:2376
dev2 - virtualbox Running tcp://192.168.99.102:2376
A 3node Consul cluster. All nodes got hardcoded IP addresses in their environment to