tekton/task/show_workspace_content.yaml

apiVersion: tekton.dev/v1beta1
kind: Task
metadata:
  name: show-workspace
spec:
  params:
    - default: /workspace/source
      description: The directory in source that contains yaml manifests
      name: source
      type: string
  steps:
    - args:
        - '-c'
        - |
          set -ex
          find /workspace
      command:
        - /bin/sh
      image: alpine
      name: dump-directory
      resources: {}
  workspaces:
    - name: source