Delete docker images

docker-images-cleanup.sh

#!/bin/sh
SAVEIFS=$IFS
DANGLING=`docker images -f dangling=true | grep -v REPOSITORY | tr -s ' ' | cut -d' ' -f3`
IFS=$'\n'
DANGLING=($DANGLING)
IFS=$SAVEIFS

if [ ${#DANGLING[@]} -gt 0 ]; then
  echo ${#DANGLING[@]} "dangling images to delete:"
  echo ${DANGLING[*]}
  docker rmi ${DANGLING[*]}
  echo ${#DANGLING[@]} "images deleted"
elif [ $# -lt 1 ]; then
  echo "Please pass the name of the images to delete as argument:"
  echo
  echo "usage:" $0 IMAGE [IMAGE...]
  exit 1
fi
declare -a TAGS
declare -a IMAGES
for ARG in $@; do
  echo "Looking for $ARG images"
  IMAGES=`docker images | grep -v REPOSITORY | grep $ARG`
  TAGS=`echo "$IMAGES" | tr -s ' ' | cut -d' ' -f2 | sort -rn | head -n2`
  IFS=$'\n'
  TAGS=($TAGS)
  IFS=$SAVEIFS
  if [ ${#TAGS[@]} -eq 0 ]; then
          echo "No tag found, nothing to delete"
          continue
  elif [ ${#TAGS[@]} -lt 2 ]; then
          echo ${#TAGS[@]} "Tags found:" ${TAGS[*]}
          echo "Only" ${#TAGS[@]} "tag found, nothing to delete"
          continue
  fi
  echo ${#TAGS[@]} "Tags found:" ${TAGS[*]}
  #echo "Filtering through images:"
  #echo "$IMAGES"
  for TAG in ${TAGS[*]}; do
    IMAGES=`echo "$IMAGES" | grep -v $TAG`
  done
  TODELETE=`echo "$IMAGES" | tr -s ' ' | cut -d' ' -f3 | xargs -I% echo % | sort -u`
  IFS=$'\n'
  TODELETE=($TODELETE)
  if [ ${#TODELETE[@]} -eq 0 ]; then
    echo "No images to delete"
    continue
  fi
  echo ${#TODELETE[@]} "images to delete:"
  echo ${TODELETE[*]}
  docker rmi ${TODELETE[*]}
  IFS=$SAVEIFS
  echo ${#TODELETE[@]} "images deleted"
done