Return OCI Index content-type for referrers response (#1762)

Signed-off-by: Josh Dolitsky <josh@dolit.ski>
google · Jul 31, 2023 · ea19b57 · ea19b57
1 parent b850480
commit ea19b57
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Showing 2 changed files with 10 additions and 0 deletions.
diff --git a/pkg/registry/manifest.go b/pkg/registry/manifest.go
@@ -437,6 +437,7 @@ func (m *manifests) handleReferrers(resp http.ResponseWriter, req *http.Request)
 	}
 	msg, _ := json.Marshal(&im)
 	resp.Header().Set("Content-Length", fmt.Sprint(len(msg)))
+	resp.Header().Set("Content-Type", string(types.OCIImageIndex))
 	resp.WriteHeader(http.StatusOK)
 	io.Copy(resp, bytes.NewReader([]byte(msg)))
 	return nil

diff --git a/pkg/registry/registry_test.go b/pkg/registry/registry_test.go
@@ -446,6 +446,9 @@ func TestCalls(t *testing.T) {
 				"foo/manifests/image":           "foo",
 				"foo/manifests/points-to-image": "{\"subject\": {\"digest\": \"sha256:" + sha256String("foo") + "\"}}",
 			},
+			Header: map[string]string{
+				"Content-Type": "application/vnd.oci.image.index.v1+json",
+			},
 		},
 		{
 			Description: "fetch references, subject pointing elsewhere",
@@ -456,6 +459,9 @@ func TestCalls(t *testing.T) {
 				"foo/manifests/image":           "foo",
 				"foo/manifests/points-to-image": "{\"subject\": {\"digest\": \"sha256:" + sha256String("nonexistant") + "\"}}",
 			},
+			Header: map[string]string{
+				"Content-Type": "application/vnd.oci.image.index.v1+json",
+			},
 		},
 		{
 			Description: "fetch references, no results",
@@ -465,6 +471,9 @@ func TestCalls(t *testing.T) {
 			Manifests: map[string]string{
 				"foo/manifests/image": "foo",
 			},
+			Header: map[string]string{
+				"Content-Type": "application/vnd.oci.image.index.v1+json",
+			},
 		},
 		{
 			Description: "fetch references, missing repo",