action.yml

name: Generate Matrix
description: Sub-action to generate a matrix of stack-yamls
inputs:
  working-directory:
    description: "Working directory for run commands"
    required: true
    default: .
  find-options:
    description: "Arguments to find(1) stack-yaml files"
    required: true
    default: "-type f -maxdepth 1 -name 'stack*.yaml'"
outputs:
  stack-yamls:
    description: Version-sorted list of all files matching stack*.yaml
    value: ${{ steps.generate.outputs.stack-yamls }}
runs:
  using: composite
  steps:
    - id: generate
      name: Generate
      shell: bash
      working-directory: ${{ inputs.working-directory }}
      run: |
        {
          echo 'stack-yamls<<EOM'
          find ${{ inputs.find-options }} -printf '"%f"\n' | sort -V | jq --slurp
          echo 'EOM'
        } >>"$GITHUB_OUTPUT"