pipeline.yaml

---
jobs:
  - name: add-file-to-output
    plan:
      - task: create-one-output
        config:
          platform: linux
          image_resource:
            type: registry-image
            source: { repository: busybox }
          outputs:
            - name: the-output
          run:
            path: /bin/sh
            args:
              - -cx
              - |
                ls -lah
                date > ./the-output/file1
      - task: add-file-to-previous-output
        config:
          platform: linux
          image_resource:
            type: registry-image
            source: { repository: busybox }
          # this task lists the same artifact as
          # its input and output
          inputs:
            - name: the-output
          outputs:
            - name: the-output
          run:
            path: /bin/sh
            args:
              - -cx
              - |
                ls -lah
                date > ./the-output/file2
      - task: read-ouput-from-previous-step
        output_mapping:
          the-output: demo-disk
        config:
          platform: linux
          image_resource:
            type: registry-image
            source: { repository: busybox }
          inputs:
            - name: the-output
          outputs:
            - name: the-output
          run:
            path: /bin/sh
            args:
              - -cx
              - |
                ls -lah ./the-output
                cat ./the-output/file1 ./the-output/file2
      - task: read-ouput-from-previous-step
        config:
          platform: linux
          image_resource:
            type: registry-image
            source: { repository: busybox }
          inputs:
            - name: demo-disk
          run:
            path: /bin/sh
            args:
              - -cx
              - |
                ls -lah
                cat ./demo-disk/file
      - task: rename-and-read-output
        # This task expects the artifact `generic-input`.
        # input_mapping will map the tasks `generic-input` to
        # the job plans `demo-disk` artifact
        input_mapping:
          generic-input: demo-disk
        config:
          platform: linux
          image_resource:
            type: registry-image
            source: { repository: busybox }
          inputs:
            - name: generic-input
          run:
            path: /bin/sh
            args:
              - -cx
              - |
                ls -lah
                cat ./generic-input/file
      - task: try-and-read-the-output
        input_mapping:
          generic-input: demo-disk
        config:
          platform: linux
          image_resource:
            type: registry-image
            source: { repository: busybox }
          # `the-output` is not available in the job plan
          # so this task will error while initializing
          # since there's no artiact named `the-output` in
          # the job's plan
          inputs:
            - name: the-output
          run:
            path: /bin/sh
            args:
              - -cx
              - |
                ls -lah
                cat ./generic-input/file