Merge pull request #28 from metaspace/rnull-v6.9 #82

	name: CI

	on:
	push:
	branches:
	- main

	permissions:
	contents: write

	jobs:
	ci:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Install `mdbook`
	run: \|
	curl --no-progress-meter --location --output mdbook.tar.gz https://github.com/rust-lang/mdBook/releases/download/v0.4.25/mdbook-v0.4.25-x86_64-unknown-linux-gnu.tar.gz
	echo "2d049e4d0a1ef739a1218cf209c99cdc0d1c66aa43a15e2183770f6e1d333324 mdbook.tar.gz" > mdbook.tar.gz.sha256
	sha256sum --check --strict mdbook.tar.gz.sha256
	tar --extract --file mdbook.tar.gz

	- name: Build book
	run: \|
	./pre.py
	./mdbook build
	./post.py

	- name: Deploy to GitHub Pages
	run: \|
	cd book
	git init
	git config user.name CI
	git config user.email ""
	git add .
	git commit -m "Deploy $GITHUB_SHA to branch `gh-pages`"
	git push --force "https://x-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY" HEAD:gh-pages

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