This is a proof of concept for automatically building and publishing (and sharing with uninitiated users) a LaTeX document with GitHub Actions.
To use this in your repo, simply copy
.github/workflows/build-doc.yaml to your
repo, keeping the same file path, and tweak the file names such as doc.tex and
doc.pdf.
The document is built on each commit push and is available as a build artifact (see https://github.com/alarsyo/latex-ci/actions), however artifacts are only downloadable as zip files.
For direct access to the PDF file, one can create a tagged release (see this SO answer for how to do it in a few clicks from GitHub) and the GitHub Action will automatically attach the PDF file to that release.