automating docker-machine environment

sdck.sh

# put it on your .bash_profile or .zshrc

dck_status=$(docker-machine status)

if [ $dck_status == "Stopped" ]; then
  echo "sdck ~ starting docker-machine..."
  docker-machine start
  echo "sdck ~ setting environment.."
  eval $(docker-machine env)
else
  echo "sdck ~ docker-machine is running."
  echo "sdck ~ setting environment.."
  eval $(docker-machine env)
fi

echo "sdck ~ finished."