What's the difference between a Docker image's Image ID and its Digest?

Question

This has been surprisingly confusing for me. I thought Docker\'s Image ID is its SHA256 hash. However, apparently the result from docker image ls --digests (listed

Answer 1

Thanks for michalk's comment. The short answer is:

• The "digest" is a hash of the manifest, introduced in Docker registry v2.
• The image ID is a hash of the local image JSON configuration.