add onsite contest guide #275

	name: Deploy
	on:
	push:
	branches:
	- docs
	env:
	YARN_ENABLE_IMMUTABLE_INSTALLS: "false"
	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v1
	- name: Set up Node
	uses: actions/setup-node@v1
	with:
	node-version: 18.x
	- name: Get yarn cache
	id: yarn-cache
	run: echo "::set-output name=dir::$(yarn cache dir)"
	- name: Restore Cache
	uses: actions/cache@v1
	with:
	path: ${{ steps.yarn-cache.outputs.dir }}
	key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
	restore-keys: ${{ runner.os }}-yarn-
	- name: Install
	run: yarn install --ignore-engines
	- name: Build
	run: yarn build && echo "hydro.js.org" >./.vuepress/dist/CNAME
	- name: Deploy
	uses: peaceiris/actions-gh-pages@v3
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./.vuepress/dist
	publish_branch: master
	force_orphan: true

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