unpack_rootfs param not causing the image to unpack

[DanielLearner]

After the last step in my docker file the task ends without "exporting to oci image format".

  - name: get_repo_and_build_image
    plan:
    - get: git_repo
      trigger: true
    - task: build
      privileged: true
      config:
        platform: linux

        image_resource:
          type: registry-image
          source:
            repository: vito/oci-build-task

        params:
          DOCKERFILE: git_repo/compose/Dockerfile
          CONTEXT: git_repo
          unpack_rootfs: true

        inputs:
        - name: git_repo

        outputs:
        - name: my_image

        run:
          path: build 

[vito]

needs to be UNPACK_ROOTFS, not unpack_rootfs

[DanielLearner]

For future reference, lower case unpack_rootfs seems to work. My issue was solved when I changed

outputs:
- name: my_image 

to

outputs:
- name: image