我想在我的kustomize库中添加一个initContainer到我的所有pod（带有特定的注解）。新添加的init容器应该是第一个init容器。我的补丁看起来像这样。

patches:
  - target:
      kind: Pod
      annotationSelector: "database_init=True"
    patch: |-
      - op: add
        path: /spec/initContainers/0
        value:
          name: database-init
          ...

这适用于所有已经有init容器的pod。不幸的是，我有没有init容器的pod，补丁失败，错误为add operation does not apply: doc is missing path: \"/spec/initContainers/0\"。我如何编写适用于所有pod的补丁？
完整示例：

.
├── base
│   ├── kustomization.yaml
│   ├── pod-1.yaml
│   └── pod-2.yaml
└── overlay
    └── kustomization.yaml

# cat base/pod-1.yaml
apiVersion: v1
kind: Pod
metadata:
  name: mypod-1
  annotations:
    database_init: True
spec:
  initContainers:
    - name: something
      image: alpine:latest
      command: ["sleep", "10" ]
  containers:
    - name: main
      image: alpine:latest
      command: [ "sleep", "60" ]

# cat base/pod-2.yaml
apiVersion: v1
kind: Pod
metadata:
  name: mypod-2
  annotations:
    database_init: True
spec:
#   initContainers:
#     - name: something
#       image: alpine:latest
#       command: ["sleep", "10" ]
  containers:
    - name: main
      image: alpine:latest
      command: [ "sleep", "60" ]

# cat base/kustomization.yaml
resources:
  - pod-1.yaml
  - pod-2.yaml

# cat overlay/kustomization.yaml
resources:
  - ../base

patches:

  - target:
      kind: Pod
      annotationSelector: "database_init=True"
    patch: |-
      - op: add
        path: /spec/initContainers/0
        value:
          name: database-init
          image: alpine:latest
          command: [ "sleep", 10 ]

结果：

$ kubectl kustomize overlay
error: add operation does not apply: doc is missing path: "/spec/initContainers/0": missing value

取消pod-2的init容器的注解后，一切正常。
编辑：添加了annotationSelector。
编辑：添加了完整的示例代码。