build.yml

name: build
# When the 'permissions' key is specified, unspecified permission scopes (e.g.,
# actions, checks, etc.) are set to no access (none).
permissions:
  contents: read
on:
  push:
    branches: [master]
  pull_request:
    branches: [master]
  schedule:
    # Run daily (* is a special character in YAML, so quote the string)
    - cron: '0 0 * * *'
  workflow_dispatch:
    inputs:
      # When git-ref is empty, HEAD will be checked out.
      git-ref:
        description: Optional git ref (branch, tag, or full SHA)
        required: false

jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [macos-latest, ubuntu-latest]

    steps:
    - name: Checkout
      uses: actions/checkout@v3
      with:
        # When the ref is empty, HEAD will be checked out.
        ref: ${{ github.event.inputs.git-ref }}

    - name: Dependencies (macos)
      if: startsWith(matrix.os, 'macos-')
      run: brew install coreutils tree

    - name: Tests
      run: realpath --help