How to correlate Docker image list with tag list both as returned by API?

Question

One can do curl https://index.docker.io/v1/repositories/ubuntu/images which yields { {"checksum": "", "id": "76ca2fd907879906ba5c936738ccce0b577590040ac8d288f07afb3d34ae8b03"}, ... }

One can also do curl https://index.docker.io/v1/repositories/ubuntu/tags which yields { {"layer": "5ba9dab4", "name": "latest"}, {"layer": "3db9c44f", "name": "10.04"}, ... }

How can you now correlate the image IDs with the tag names? Can you rely on the order of the items? Can you get the image id from the shorthand layer id?

Answer 1

The layer is the first 8 characters of the image id.