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1. 1. 1. Example

*ApplicationSet templates Applications with EXISTING legacy annotations:*

```yaml
apiVersion: argoproj.io/v1alpha1
kind: Application
metadata:
name: us-east-app-1
labels:
image-updater: my-image-updater # For CR to select
annotations:

1. EXISTING legacy annotations - no changes needed!
   argocd-image-updater.argoproj.io/image-list: 'app=nexus.company.domain/myapp:develop'
   argocd-image-updater.argoproj.io/app.update-strategy: digest
   argocd-image-updater.argoproj.io/app.helm.image-tag: mychart.image.tag
   spec: ...
   —
   apiVersion: argoproj.io/v1alpha1
   kind: Application
   metadata:
   name: eu-west-app-1
   labels:
   image-updater: my-image-updater
   annotations:
2. Different tag for this app!
   argocd-image-updater.argoproj.io/image-list: 'app=nexus.company.domain/myapp:main'
   argocd-image-updater.argoproj.io/app.update-strategy: digest
   argocd-image-updater.argoproj.io/app.helm.image-tag: mychart.image.tag
   spec: ...
   ```

*One ImageUpdater CR for the entire ApplicationSet:*

```yaml
apiVersion: argocd-image-updater.argoproj.io/v1alpha1
kind: ImageUpdater
metadata:
name: my-image-updater
spec:
namespace: argocd
applicationRefs:

• namePattern: "*" # Wildcard - rely on labelSelectors
  labelSelectors:
  matchLabels:
  image-updater: my-image-updater
  readFromApplicationAnnotations: true # NEW FIELD - read legacy annotations!
  ```

1. 1. 1. CRD Change Required

*Add ONE new field to `ApplicationRef`:*

```go
type ApplicationRef struct

{ NamePattern string `json:"namePattern"` LabelSelectors *metav1.LabelSelector `json:"labelSelectors,omitempty"` // NEW: When true, read image configuration from Application's // argocd-image-updater.argoproj.io/* annotations instead of // requiring explicit Images[] configuration in this CR. // +optional ReadFromApplicationAnnotations *bool `json:"readFromApplicationAnnotations,omitempty"` // Existing fields - used when ReadFromApplicationAnnotations is false/nil *CommonUpdateSettings `json:"commonUpdateSettings,omitempty"` *WriteBackConfig `json:"writeBackConfig,omitempty"` Images []ImageConfig `json:"images,omitempty"` // Now optional! }

```