AWS CLI: ECR list-images, get newest

Question

Using AWS CLI, and jq if needed, I\'m trying to get the tag of the newest image in a particular repo.

Let\'s call the repo foo, and sa

Answer 1

Without having to sort the results, you can filter them specifying the imageTag=latest on image-ids, like so:

aws ecr describe-images --repository-name foo --image-ids imageTag=latest --output text

This will return only one result with the newest image, which is the one tagged as latest

Answer 2

List latest 3 images

aws ecr describe-images --repository-name gvh \
--query 'sort_by(imageDetails,& imagePushedAt)[*].imageTags[0]' --output yaml \
| tail -n 3 | awk -F'- ' '{print $2}'

Skip latest 3 images

aws ecr describe-images --repository-name gvh \
--query 'sort_by(imageDetails,& imagePushedAt)[*].imageTags[0]' --output yaml \
| head -n -3 | awk -F'- ' '{print $2}'

Number '3' can be generalized in either head or tail command based on user requirement

Answer 3

To get only latest image with out special character minor addition required for above answer.

aws ecr describe-images --repository-name foo --query 'sort_by(imageDetails,& imagePushedAt)[-1].imageTags[0]' --output text

Answer 4

To add to Frederic's answer, if you want the latest, you can use [-1]:

aws ecr describe-images --repository-name foo \
--query 'sort_by(imageDetails,& imagePushedAt)[-1].imageTags[0]'

Assuming you are using a singular tag on your images... otherwise you might need to use imageTags[*] and do a little more work to grab the tag you want.

Answer 5

You can use describe-images instead.

aws ecr describe-images --repository-name foo 

returns imagePushedAt which is a timestamp property which you can use to filter.

I dont have examples in my account to test with but something like following should work

aws ecr describe-images --repository-name foo \
--query 'sort_by(imageDetails,& imagePushedAt)[*]'

If you want another flavor of using sort method, you can review this post