Get digest of image by its tag name

[vramik]

Hello, is there an endpoint to get a digest of image by its name?

If I need to get digest of latest image of https://quay.io/keycloak/keycloak without downloading it, how can I get it?

[ibazulic]

You can use the API:

curl -H "Authorization: Bearer your-token-here" https://quay.io/api/v1/repository/{NAMESPACE}/{REPOSITORY}/tag/?specific-tag-name

The output will contain the manifest digest of the tag you indicated. For instance:

$ curl "https://quay.io/api/v1/repository/coreos/etcd/tag/?specificTag=v3.4.24-ppc64le" | jq '.'
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   311  100   311    0     0   2381      0 --:--:-- --:--:-- --:--:--  2392
{
  "tags": [
    {
      "name": "v3.4.24-ppc64le",
      "reversion": false,
      "start_ts": 1676511950,
      "manifest_digest": "sha256:18e50e8f053968541f0efef7bbfa8d58d876f251acdb9afecb2c7c6cec409e2f",
      "is_manifest_list": false,
      "size": 12119938,
      "last_modified": "Thu, 16 Feb 2023 01:45:50 -0000"
    }
  ],
  "page": 1,
  "has_additional": false
}

Public images do not require authentication.

[vramik]

thanks a lot

[ibazulic]

You're most welcome! :-)