Complete the part of Position/Angle and problem 2 of IMO in 2007 (#301) #205

	name: Build docs
	on:
	push:
	branches:
	- "master"
	jobs:
	build:
	permissions:
	contents: read
	pages: write
	id-token: write
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	runs-on: ubuntu-latest
	steps:
	- name: Checkout Project
	uses: actions/checkout@v3
	with:
	fetch-depth: 2
	lfs: true
	- name: Install Lean
	run: \|
	curl https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -sSf \| sh -s - -y --default-toolchain `cat ./lean-toolchain`
	echo "$HOME/.elan/bin" >> $GITHUB_PATH
	- run: \|
	lake -Kenv=CI_BUILD exe cache get && lake -Kenv=CI_BUILD build && lake -Kenv=CI_BUILD build EuclideanGeometry:docs
	- name: Fix permissions
	run: \|
	chmod -c -R +rX "./.lake/build/doc/" \| while read line; do
	echo "::warning title=Invalid file permissions automatically fixed::$line"
	done
	- name: Upload artifact
	uses: actions/upload-pages-artifact@v1
	with:
	path: ./.lake/build/doc/
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v1

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