Multiple exports kctrl

package-build.yml

# scroll down to the export section
---
apiVersion: kctrl.carvel.dev/v1alpha1
kind: PackageBuild
metadata:
  name: first.package.tanzu.vmware.com
spec:
  release:
  - resource: {}
  template:
    spec:
      app:
        spec:
          deploy:
          - kapp: {}
          template:
          - ytt:
              paths:
              - carvel/...
          - kbld:
              paths:
              - kbld-config.yaml
              - config/...
      export:
      - imgpkgBundle:
          image: prod.registry.com/first
          useKbldImagesLock: true
        includePaths:
        - config/...
        targets:
        - "all"
        - "prod"
      - imgpkgBundle:
          image: #@ data.values.build.destination + "/first-package-imgpkg"
          useKbldImagesLock: true
        includePaths:
        - config/...
        targets:
        - "all"
        - "staging"

release.sh

# Release to both registries
kctrl package release --version 1.0.0 --target all

# Release to dev
kctrl package release --version 1.0.0 --target dev

# Release to prod
kctrl package release --version 1.0.0 --target prod

# I do not think we would need this, but we could also support multiple targets
kctrl package release --version 1.0.0 --targets "prod,dev"