stuff.sh

# Create the cluster token
docker-machine create -d virtualbox first-machine
$(docker-machine env first-machine)
export TOKEN=$(docker run swarm create)

# Create a master
MASTER_NAME="swarm-master"
docker-machine create -d virtualbox --swarm --swarm-master --swarm-discovery token://${TOKEN} ${MASTER_NAME}

# Create some nodes
for i in 0 1; do
    echo $i
    docker-machine create -d virtualbox --swarm --swarm-discovery token://${TOKEN} swarm-node-${i}
done

docker-machine ls
NAME            ACTIVE   DRIVER       STATE     URL                         SWARM
first-machine            virtualbox   Running   tcp://192.168.99.103:2376   
swarm-master             virtualbox   Running   tcp://192.168.99.104:2376   swarm-master (master)
swarm-node-0             virtualbox   Running   tcp://192.168.99.111:2376   
swarm-node-1    *        virtualbox   Running   tcp://192.168.99.112:2376