#!/bin/sh

PATH=.:/sbin:/usr/sbin:/bin:/usr/bin:/usr/local/bin

sudo='sudo'
if id $(whoami) | grep docker > /dev/null 2>&1; then
  sudo=''
fi 
[ `whoami` = 'root' ] && sudo=''

if ! tty -s; then
  echo `date '+%Y-%m-%d %H:%M:%S %z'`' Removing untagged images ...'
fi
$sudo docker images | awk '$2=="<none>" {print $3}' | $sudo xargs --no-run-if-empty docker rmi
