Can I get an image digest without downloading the image?

Question

Similar to the question \"What´s the sha256 code of a docker image?\", I would like to find the digest of a Docker image. I can see the digest when I download an image:

Answer 1

I realise this issue is answered however either I am missing something or the current version of AWS ECR registry service does not work as expected.

When trying to get the digest from AWS ECR using either HEAD and also trying to switch the content-type does not return a digest value that I can use to pull an image using the registry Api.

To get this digest you have to get the manifest for the tag you are interested in and calculate the sha256 of the response Json as is, including the formatting, without the signature section