ExtractPathFromManifest returns the path information and whether the artifact contains an archive.

IsDigest returns if the image is identified by a digest.

NewCredentialsAggregate aggregates multiple auth.CredentialFunc into one function.

ParseManifestJSON return the Manifest that is yielded by the reader.

ParseOciImageString splits the image string into the repo, tag and indicates if it is an image that is identified by a digest.

Manifest provides `application/vnd.oci.image.manifest.v1+json` mediatype structure when marshalled to JSON.