Merge pull request heroku#49 from RussellRollins/dependency-update

Updates docker-registry-client to use opencontainers/go-digest.

Author: ojacobson

Godeps/Godeps.json

@@ -6,7 +6,7 @@ import (
 	"net/url"
 
 	"github.com/docker/distribution"
-	"github.com/docker/distribution/digest"
+	digest "github.com/opencontainers/go-digest"
 )
 
 func (registry *Registry) DownloadLayer(repository string, digest digest.Digest) (io.ReadCloser, error) {

registry/layer.go

@@ -5,9 +5,9 @@ import (
 	"io/ioutil"
 	"net/http"
 
-	"github.com/docker/distribution/digest"
 	manifestV1 "github.com/docker/distribution/manifest/schema1"
 	manifestV2 "github.com/docker/distribution/manifest/schema2"
+	digest "github.com/opencontainers/go-digest"
 )
 
 func (registry *Registry) Manifest(repository, reference string) (*manifestV1.SignedManifest, error) {
@@ -80,7 +80,7 @@ func (registry *Registry) ManifestDigest(repository, reference string) (digest.D
 	if err != nil {
 		return "", err
 	}
-	return digest.ParseDigest(resp.Header.Get("Docker-Content-Digest"))
+	return digest.Parse(resp.Header.Get("Docker-Content-Digest"))
 }
 
 func (registry *Registry) DeleteManifest(repository string, digest digest.Digest) error {