images does not work with YAML anchors

[eyalzek]

Describe the bug

using images fails when YAML anchors are in place.

Files that can reproduce the issue

kustomization.yaml

---
kind: Kustomization
apiVersion: kustomize.config.k8s.io/v1beta1

resources:
  - resources.yaml

images:
  - name: busybox
    newTag: stable

resources.yaml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: foo
spec:
  template:
    spec:
      containers:
        - name: foo
          image: &image busybox
        - name: bar
          image: *image

Expected output

the Deployment is generated with the correct image.

Actual output

$ k kustomize .
Error: wrong Node Kind for  expected: ScalarNode was AliasNode: value: {*image}

Kustomize version

• 4.0.5 (bundled in kubectl)
• 4.1.2 (current latest)

Platform

linux

Additional context

we're in the process of updating our kustomization files since we use the bundled version in kubectl (which was just updated from v2 -> v4). This setup with images & yaml anchors used to work on 2.0.3.

[KnVerey]

This problem is not exclusive to the images field; this seems to be a duplicate of #3675

/triage duplicate
/close

[k8s-ci-robot]

@KnVerey: Closing this issue.

In response to this:

This problem is not exclusive to the images field; this seems to be a duplicate of #3675

/triage duplicate
/close

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