Use Docker Toolbox with simple commands like boot2docker

.zshrc-docker-toolbox-simple-wrapper

#
# Add code below at the bottom of your zshrc/bashrc.
# You can use Docker Toolbox with simple commands like boot2docker.
# Notice: This script can handle only `default` machine.
#
# e.g.
# b2d start
# b2d ssh
# b2d stop
#

# Set env values for new shell
if [ "`docker-machine status default`" = "Running" ]; then
   eval "$(docker-machine env default)"
fi

# docker-machine command wrapper
b2d () {
    if [ $# != 1 ]; then
        echo "Phew, We need a command to run. See `docker-machine help`."
    else
        docker-machine $1 default
        if [ "`docker-machine status default`" = "Running" ]; then
            eval "$(docker-machine env default)"
        fi
    fi
}