My Docker Command

README.md

My Docker Command

When working with docker toolbox, sometimes I type get tripped up trying to type docker-machine env default and accidentally type docker machine env default instead. This bash script is a helper to allow you to do just that.

Put it in your $PATH and chmod +x my-docker. Then create an alias in your profile with alias docker="my-docker"

Now when you type docker machine env this will automatically proxy anything after machine to docker-machine.

Same goes for docker compose up proxies to docker-compose up.

my-docker

#!/usr/bin/env bash

machine () {
  shift
  local args=("${@:1}")
  docker-machine "${args[@]}"
}

compose () {
  shift
  local args=("${@:1}")
  docker-compose "${args[@]}"
}

cleanup () {
  case "$2" in
    images)
      docker rmi $(docker images -f -q "dangling=true")
    ;;
    containers)
      docker rm -f $(docker ps -aq -f "status=exited")
    ;;
    *)
      echo "Please provide an extra argument, either \`images\` or \`containers\`."
    ;;
  esac
}

main () {
  local args=("$@")

  case "$1" in
    machine) machine "${args[@]}" ;;
    compose) compose "${args[@]}" ;;
    cleanup) cleanup "${args[@]}" ;;
    *) docker "${args[@]}" ;;
  esac
}

main "$@"

Added support for cleaning up containers and images, by just issuing docker cleanup images or docker cleanup containers.

To be safe (and shorten the code), you should consider using something like this on line 25:
docker ps -aq -f "status=exited"

It doesn't depend on the possibly changing docker output and will also not catch container named Exited (strange but possible! :)

Good suggestion @RRAlex. Updated. Thank you.