fix some problems #260

	# This is a basic workflow to help you get started with Actions

	name: CD

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	branches: [ master ]

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest

	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2

	# Runs a single command using the runners shell
	- name: Build the book
	run: \|
	sudo apt install python3-sphinx
	sudo apt install graphviz
	npm install
	./scripts/build.sh

	# Runs a set of commands using the runners shell
	- name: Deploy to github pages
	if: success()
	uses: crazy-max/[email protected]
	with:
	build_dir: _build
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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