build-on-pull-request.yaml

# This pipeline builds the PDF ebook on any pull request to master.
name: "Build PDF"
on:
  pull_request:
    branches:
      - master

jobs:
  prepare-pdf:
    # Focal Fossa. Please don't use 'latest' tags, it's an anti-pattern.
    runs-on: ubuntu-20.04
    steps:
      # Checkout the code.
      - name: Checkout
        uses: actions/checkout@v2

      # Set a descriptive version. For PRs it'll be the short sha.
      - name: Set Version
        id: set_version
        run: echo ::set-output name=VERSION::$(git rev-parse --short HEAD)

      # Prepare the content files.
      - name: Prepare Content
        run: ./scripts/prepare-markdown-for-ebook.sh ${{ steps.set_version.outputs.VERSION }}
      
      # Create a PDF from the prepared markdown.
      - name: Prepare PDF
        uses: docker://pandoc/latex:2.9
        with:
          args: "-V toc-title:\"Table Of Contents\" --toc --pdf-engine=pdflatex --standalone --output hacker-laws.pdf hacker-laws.md"

      # Publish the PDF and intermediate markdown as an artifact.
      - name: Publish PDF Artifact
        uses: actions/upload-artifact@master
        with:
          name: hacker-laws.pdf
          path: hacker-laws.pdf

      - name: Publish Intermediate Markdown Artifact
        uses: actions/upload-artifact@master
        with:
          name: hacker-laws.md
          path: hacker-laws.md