How to delete docker images older than x days from docker hub using a shell script serverfault code example

Example 1: how to delete docker images older than x days from docker hub using a shell script serverfault

#!/bin/bash
#Script will delete all images in all repositories of your docker hub account which are older than 'X' days
set -e

# set your username, password and no. of 'X' days value in below lines.
#UNAME="YOUR_USERNAME"
#UPASS="YOUR_PASSWORD"
#X="YOUR_DAYS_VALUE"

# pass username,password and no of 'X' days value from terminal as below line.
# ./docker-images-remove-script.sh <username> <password> <30>
UNAME=$1
UPASS=$2
X=$3

# get token to be able to talk to Docker Hub
TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token)


#echo $TOKEN
echo
# get list of repos for that user account
echo "List of Repositories in '${UNAME}' Docker Hub account."
sleep 5
REPO_LIST=$(curl -s -H "Authorization: JWT ${TOKEN}" "https://hub.docker.com/v2/repositories/${UNAME}/?page_size=10000" | jq -r '.results|.[]|.name')
#echo "$REPO_LIST"
count=1
for rep in ${REPO_LIST}
do
     echo S.No: $count RepoName:  $rep
     count=`expr $count + 1`
done
echo
sleep 5



echo
echo "Identifying and deleting images which are older than $X days in '${UNAME}' docker hub account."
sleep 5

#NOTE!!! For deleting specific repositories images please include only those repositories in for-loop, like below for-loop which has repos mysql and mymongo 
#for i in  mysql mymongo

for rep in ${REPO_LIST}
 

do
    # get total no. of images & their count for a repo
    Images=$(curl -s -H "Authorization: JWT ${TOKEN}" "https://hub.docker.com/v2/repositories/$UNAME/$rep/tags/")
    ImageCount=$(echo $Images | jq -r '.count')    
    echo "Total no of Images in '$UNAME/$rep' repository are: $ImageCount"
    pages=`expr $ImageCount / 100 + 1`
    echo "No pages to iterate are: $pages"    
    sleep 5
    for (( p=1; p<=$pages; p++ ))
    do         
        echo "Looping Through '$rep' repository in '${UNAME}' account."
        IMAGES=$(curl -s -H "Authorization: JWT ${TOKEN}" "https://hub.docker.com/v2/repositories/${UNAME}/${rep}/tags/?page_size=100&page=$p") 
        IMAGE_TAGS=$(echo $IMAGES | jq -r '.results|.[]|.name')
        count1=1

             # build a list of images from tags
             for tag in ${IMAGE_TAGS}
             do
                  
                  echo Iteration no. is: $p
                  echo "S.No: $count1. RepoName: '$rep' ImageTag: $tag"
                  count1=`expr $count1 + 1`
                  sleep 5
                  # Get last_updated_time
                  updated_time=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/${rep}/tags/${tag}/?page_size=100 | jq -r '.last_updated')
                  echo "Image build date and time is : $updated_time"
                  datetime=$updated_time
                  timeago=''$X' days ago'
                  #echo $timeago

                  dtSec=$(date --date "$datetime" +"%Y%m%d")
                  taSec=$(date --date "$timeago"  +"%Y%m%d")
                   
                  dt_Sec=$(date --date "$datetime" +"%Y-%m-%d")
                  ta_Sec=$(date --date "$timeago"  +"%Y-%m-%d")
                  

                  echo "INFO: Date on which this image was build: $dt_Sec" 
                  echo "INFO: $X days earlier date from today is: $ta_Sec" 
                  sleep 5
                  if [ $dtSec -lt $taSec ] 
                  then
                        echo "This image '${UNAME}/${rep}:${tag}'  is older than $X days, deleting this  image."
                  #### Note! TO delete an image please uncomment below line.
                  #### curl -s  -X DELETE  -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/${rep}/tags/${tag}/
                  else
                        echo "This image '${UNAME}/${rep}:${tag}' is within $X days time range, keep this image."
                  fi
             done      
    done
echo
done

echo "Script execution ends here."

Example 2: How to delete docker images from docker hub using a shell script serverfault

#!/bin/bash

set -e

# set username and password
UNAME="YOUR_USERNAME"
UPASS="YOUR_PASSWORD"

# get token to be able to talk to Docker Hub
TOKEN=$(curl -s -H "Content-Type: application/json" -X POST -d '{"username": "'${UNAME}'", "password": "'${UPASS}'"}' https://hub.docker.com/v2/users/login/ | jq -r .token)

# get list of namespaces accessible by user (not in use right now)
#NAMESPACES=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/namespaces/ | jq -r '.namespaces|.[]')

#echo $TOKEN
echo
# get list of repos for that user account
echo "List of Repositories in ${UNAME} Docker Hub account"
sleep 5
REPO_LIST=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/?page_size=10000 | jq -r '.results|.[]|.name')
echo $REPO_LIST
echo
# build a list of all images & tags
for i in ${REPO_LIST}
do
  # get tags for repo
  IMAGE_TAGS=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/${i}/tags/?page_size=10000 | jq -r '.results|.[]|.name')

  # build a list of images from tags
  for j in ${IMAGE_TAGS}
  do
    # add each tag to list
    FULL_IMAGE_LIST="${FULL_IMAGE_LIST} ${UNAME}/${i}:${j}"
      
  done
done

# output list of all docker images
echo
echo "List of all docker images in ${UNAME} Docker Hub account"
sleep 10
for i in ${FULL_IMAGE_LIST}
do
  echo ${i}
done

sleep 10
echo
echo "Identifying and deleting images which are older than 50 days in ${UNAME} docker hub account"
sleep 10
for i in ${REPO_LIST}

#NOTE!!! For deleting Specific repositories images please include only those repositories in for loop  like below for loop which has repos mygninx and mykibana 
#for i in  mynginx mykibana 

do
  # get tags for repo
  echo
  echo "Looping Through $i repository in ${UNAME} account"
  IMAGE_TAGS=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/${i}/tags/?page_size=10000 | jq -r '.results|.[]|.name')

  # build a list of images from tags
  for j in ${IMAGE_TAGS}
  do
      echo
      # add last_updated_time
    updated_time=$(curl -s -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/${i}/tags/${j}/?page_size=10000 | jq -r '.last_updated')
    echo $updated_time
    datetime=$updated_time
    timeago='50 days ago'

    dtSec=$(date --date "$datetime" +'%s')
    taSec=$(date --date "$timeago" +'%s')

    echo "INFO: dtSec=$dtSec, taSec=$taSec" 

           if [ $dtSec -lt $taSec ] 
           then
              echo "This image ${UNAME}/${i}:${j} is older than 50 days, deleting this  image"
              ## Please uncomment below line to delete docker hub images of docker hub repositories
              #curl -s  -X DELETE  -H "Authorization: JWT ${TOKEN}" https://hub.docker.com/v2/repositories/${UNAME}/${i}/tags/${j}/
           else
              echo "This image ${UNAME}/${i}:${j} is within 50 days time range, keep this image"
           fi      
  done
done

echo "Script execution ends"

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