Add doctype to playgrounds #37

	name: Release Insiders

	on:
	push:
	branches: [master]

	jobs:
	build:
	runs-on: ubuntu-latest

	strategy:
	matrix:
	node-version: [12]

	steps:
	- uses: actions/checkout@v2

	- name: Use Node.js ${{ matrix.node-version }}
	uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node-version }}
	registry-url: 'https://registry.npmjs.org'

	- name: Use cached node_modules
	id: cache
	uses: actions/cache@v2
	with:
	path: node_modules
	key: nodeModules-${{ hashFiles('**/package-lock.json') }}-${{ matrix.node-version }}
	restore-keys: \|
	nodeModules-

	- name: Install dependencies
	if: steps.cache.outputs.cache-hit != 'true'
	run: npm install
	env:
	CI: true

	- name: Resolve version
	id: vars
	run: echo "::set-output name=sha_short::$(git rev-parse --short HEAD)"

	- name: "Version based on commit: 0.0.0-insiders.${{ steps.vars.outputs.sha_short }}"
	run: npm version 0.0.0-insiders.${{ steps.vars.outputs.sha_short }} --force --no-git-tag-version

	- name: Publish
	run: npm publish --tag insiders
	env:
	CI: true
	NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

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