name: Lint GitHub Actions workflows
on:
  pull_request:
    paths:
    - '.github/**'
  merge_group:
  push:
    paths:
    - '.github/**'

jobs:
  actionlint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Download actionlint
        id: get_actionlint
        run: bash <(curl https://raw.githubusercontent.com/rhysd/actionlint/main/scripts/download-actionlint.bash)
        shell: bash
      - name: Check workflow files
        run: SHELLCHECK_OPTS="-S error" ${{ steps.get_actionlint.outputs.executable }} -color
        shell: bash