Changed image name to be full image name minus tag. Also added test f…

…or new ImageNameDigestFile flag

pkg/executor/push.go

@@ -141,7 +141,7 @@ func DoPush(image v1.Image, opts *config.KanikoOptions) error {
 			return errors.Wrap(err, "getting tag for destination")
 		}
 		if opts.ImageNameDigestFile != "" {
-			imageName := []byte(destination + "@")
+			imageName := []byte(destRef.Repository.Name() + "@")
 			builder.Write(append(imageName, digestByteArray...))
 			builder.WriteString("\n")
 		}

pkg/executor/push_test.go

@@ -192,3 +192,34 @@ func TestOCILayoutPath(t *testing.T) {
 	got, err := layoutImage.Manifest()
 	testutil.CheckErrorAndDeepEqual(t, false, err, want, got)
 }
+
+func TestImageNameDigestFile(t *testing.T) {
+	image, err := random.Image(1024, 4)
+	if err != nil {
+		t.Fatalf("could not create image: %s", err)
+	}
+
+	digest, err := image.Digest()
+	if err != nil {
+		t.Fatalf("could not get image digest: %s", err)
+	}
+
+	opts := config.KanikoOptions{
+		NoPush:        true,
+		Destinations: []string{"gcr.io/foo/bar:latest", "bob/image"},
+		ImageNameDigestFile: "tmpFile",	
+	}
+
+	defer os.Remove("tmpFile")
+
+	if err := DoPush(image, &opts); err != nil {
+		t.Fatalf("could not push image: %s", err)
+	}
+
+	want := []byte("gcr.io/foo/bar@" + digest.String() + "\nindex.docker.io/bob/image@" + digest.String() +"\n")
+
+	got, err := ioutil.ReadFile("tmpFile")
+
+	testutil.CheckErrorAndDeepEqual(t, false, err, want, got)
+
+}