Bump eta, @docusaurus/core, @docusaurus/preset-classic and @docusauru… #86

	name: CI

	on:
	push:
	branches:
	pull_request:

	jobs:
	build:
	runs-on: ubuntu-latest
	timeout-minutes: 60
	steps:
	- uses: actions/checkout@v2

	- name: Read .nvmrc
	run: echo NVMRC=`cat .nvmrc` >> $GITHUB_ENV

	- uses: actions/setup-node@v2
	with:
	node-version: ${{ env.NVMRC }}
	cache: 'npm'
	cache-dependency-path: ./package-lock.json

	- name: Install dependencies
	run: npm ci

	- name: Test Markdown
	run: npm run test:markdown

	- name: Build
	run: npm run build

	- name: Upload GitHub Pages artifacts
	uses: actions/upload-artifact@v1
	if: github.ref == 'refs/heads/main' &&
	github.repository == 'costrojs/costrojs.github.io' &&
	github.event_name != 'pull_request'
	with:
	name: docs
	path: build

	deploy-docs:
	runs-on: ubuntu-latest
	timeout-minutes: 10
	needs: build
	if: success() &&
	github.ref == 'refs/heads/main' &&
	github.repository == 'costrojs/costrojs.github.io' &&
	github.event_name != 'pull_request'
	steps:
	- uses: actions/checkout@v2

	- name: Download GitHub Pages artifacts
	uses: actions/download-artifact@v1
	with:
	name: docs
	# The path is mandatory with actions/download-artifact@v2
	# https://github.com/actions/download-artifact#compatibility-between-v1-and-v2
	path: build

	- name: Deploy to Github Pages
	uses: crazy-max/ghaction-github-pages@v1
	with:
	target_branch: docs
	build_dir: build
	keep_history: false
	commit_message: "Deploy to GitHub pages"
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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