Fix GitHub Actions workflow for LaTeX PDF generation

[Copilot]

The build_pdf.yml workflow was misconfigured and failing to build the LaTeX document.

Changes

• Fixed compilation directory: Added working-directory: latex to run xelatex/bibtex in the correct location
• Fixed artifact path: Changed upload path from lib.pdf to latex/lib.pdf
• Updated action versions: Migrated from @v2 to @v4 for checkout and upload-artifact
• Added missing packages: Installed texlive-bibtex-extra and bibtex2html for bibliography compilation
• Added .gitignore: Excludes LaTeX build artifacts (*.aux, *.bbl, *.log, *.pdf)

Workflow now executes:

- name: Compile LaTeX document
  working-directory: latex
  run: |
    xelatex -interaction=nonstopmode -halt-on-error lib.tex
    bibtex lib
    xelatex -interaction=nonstopmode -halt-on-error lib.tex
    xelatex -interaction=nonstopmode -halt-on-error lib.tex

The generated PDF is uploaded as a workflow artifact for download.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• esm.ubuntu.com
  • Triggering command: /usr/lib/apt/methods/https /usr/lib/apt/methods/https (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Would like to set up a github action to build the latex document and make a pdf, build_pdf.yml is the file it should be doing that, not sure if it works

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[py1sl]

worth a go