apiVersion: core.oam.dev/v1alpha2
kind: WorkloadDefinition
metadata:
  name: deployments.testapps
spec:
  definitionRef:
    name: deployments.testapps
  extension:
    alias: deployment
    object:
      apiVersion: core.oam.dev/v1alpha2
      kind: Deployment
    parameters:
      - name: image
        short: i
        required: true
        fieldPaths:
          - "spec.containers[0].image"