fix(ui): fix image details view (#2470)

when a UI client tries to view image details
for an image with multiple tags pointing to the same digest
we make a query to dynamodb having duplicate keys (same digest)
resulting in an error and the client is redirect back to image
overview.

closes: #2464

Signed-off-by: Petu Eusebiu <peusebiu@cisco.com>

pkg/extensions/search/resolver.go

@@ -1439,7 +1439,11 @@ func expandedRepoInfo(ctx context.Context, repo string, metaDB mTypes.MetaDB, cv
 			continue
 		}
 
-		tagsDigests = append(tagsDigests, repoMeta.Tags[i].Digest)
+		digest := repoMeta.Tags[i].Digest
+
+		if !zcommon.Contains(tagsDigests, digest) {
+			tagsDigests = append(tagsDigests, digest)
+		}
 	}
 
 	imageMetaMap, err := metaDB.FilterImageMeta(ctx, tagsDigests)

pkg/meta/dynamodb/dynamodb_test.go

@@ -236,6 +236,16 @@ func TestWrapperErrors(t *testing.T) {
 			})
 		})
 		Convey("FilterImageMeta", func() {
+			Convey("FilterImageMeta with duplicate digests", func() {
+				image := CreateRandomImage()
+
+				err := dynamoWrapper.SetRepoReference(ctx, "repo", "tag", image.AsImageMeta())
+				So(err, ShouldBeNil)
+
+				_, err = dynamoWrapper.FilterImageMeta(ctx, []string{image.DigestStr(), image.DigestStr()})
+				So(err, ShouldNotBeNil)
+			})
+
 			Convey("manifest meta unmarshal error", func() {
 				err = setImageMeta(image.Digest(), badProtoBlob, dynamoWrapper) //nolint: contextcheck
 				So(err, ShouldBeNil)
@@ -243,6 +253,7 @@ func TestWrapperErrors(t *testing.T) {
 				_, err = dynamoWrapper.FilterImageMeta(ctx, []string{image.DigestStr()})
 				So(err, ShouldNotBeNil)
 			})
+
 			Convey("MediaType ImageIndex, getProtoImageMeta fails", func() {
 				err := dynamoWrapper.SetImageMeta(multiarchImageMeta.Digest, multiarchImageMeta) //nolint: contextcheck
 				So(err, ShouldBeNil)