Load docker and put it in the shell

docker-clean.sh

# in your .zshrc

function docker_clean() {
  containers=$(docker ps -a -q -f status=exited)
  # echo $containers

  if [ "" != "$containers" ] ; then
    docker rm -v $containers
  fi
}

docker-start-linux.sh

# in your .zshrc

function docker_start() {
  machine_status=$(docker-machine status)
  # echo $machine_status

  # If the machine is already running, it skips the start command
  # and will fix the environment variables of the current shell.
  if [ "Stopped" = "$machine_status" ] ; then
    docker-machine start default
  fi

  eval "$(docker-machine env default)"
}

docker-start-osx.sh

# in your zsh profile

function docker_start() {
  machine_status=$(docker-machine status)
  # echo $machine_status

  # If the machine is already running, it skips the start command 
  # and will fix the environment variables of the current shell.
  if [ "Stopped" == $machine_status ]
  then
    docker-machine start default
  fi

  eval "$(docker-machine env default)"
}