Set digests in image override

Signed-off-by: Somtochi Onyekwere <somtochionyekwere@gmail.com>

controllers/kustomization_generator.go

@@ -104,6 +104,7 @@ func (kg *KustomizeGenerator) WriteFile(dirPath string) error {
 			Name:    image.Name,
 			NewName: image.NewName,
 			NewTag:  image.NewTag,
+			Digest:  image.Digest,
 		}
 		if exists, index := checkKustomizeImageExists(kus.Images, image.Name); exists {
 			kus.Images[index] = newImage

controllers/kustomization_generator_test.go

@@ -50,3 +50,7 @@ func Test_secureBuildKustomization_panic(t *testing.T) {
 		g.Expect(err).To(HaveOccurred())
 	})
 }
+
+func Test_WriteFile(t *testing.T) {
+
+}

controllers/kustomization_transformer_test.go

@@ -332,6 +332,10 @@ func TestKustomizationReconciler_FluxTransformers(t *testing.T) {
 					NewName: "ghcr.io/stefanprodan/podinfo",
 					NewTag:  "5.2.0",
 				},
+				{
+					Name:   "ghcr.io/fluxcd/flagger",
+					Digest: "sha256:2832f53c577d44753e97b0ed5f00e7e3a06979c9fab77d0e78bdac4b612b14fb",
+				},
 			},
 			Patches: []kustomize.Patch{
 				{
@@ -394,6 +398,8 @@ metadata:
 		g.Expect(deployment.ObjectMeta.Labels["patch3"]).To(Equal("json6902"))
 		g.Expect(deployment.ObjectMeta.Labels["patch4"]).To(Equal("strategic-merge"))
 		g.Expect(*deployment.Spec.Replicas).To(Equal(int32(2)))
+		g.Expect(deployment.Spec.Template.Spec.Containers[0].Image).To(ContainSubstring("5.2.0"))
+		g.Expect(deployment.Spec.Template.Spec.Containers[1].Image).To(ContainSubstring("sha256:2832f53c577d44753e97b0ed5f00e7e3a06979c9fab77d0e78bdac4b612b14fb"))
 	})
 }
 

controllers/testdata/patch/deployment.yaml

@@ -17,3 +17,5 @@ spec:
       containers:
       - name: podinfo
         image: podinfo
+      - name: flagger
+        image: ghcr.io/fluxcd/flagger