Reuse https://github.com/xu-cheng/latex-docker to speedup gitpod #1156

	name: Build

	on:
	push:
	branches: [ algoxy ]
	pull_request:
	branches: [ algoxy ]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Before build
	run: \|
	sed -i 's/SimSun/Noto Serif CJK SC/; s/SimHei/Noto Sans CJK SC/; s/Consolas/FreeMono/' prelude.sty
	- name: Build
	uses: xu-cheng/texlive-action/full@v1
	with:
	run: \|
	apk add make font-noto-cjk ttf-freefont
	make
	- name: After build
	run: \|
	export GIT_HASH=$(git rev-parse --short "$GITHUB_SHA")
	mv algoxy-en.pdf "algoxy-en-$GIT_HASH.pdf"
	mv algoxy-zh-cn.pdf "algoxy-zh-cn-$GIT_HASH.pdf"
	- name: Upload Artifact
	uses: actions/upload-artifact@v2
	with:
	name: algoxy
	path: algoxy-*.pdf

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