docker: add docker document. #73

	# Simple workflow for deploying static content to GitHub Pages
	name: Deploy SmartDNS Pages

	on:
	# Runs on pushes targeting the default branch
	push:
	branches: ["doc"]

	# Allows you to run this workflow manually from the Actions tab
	workflow_dispatch:

	# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
	permissions:
	contents: read
	pages: write
	id-token: write

	# Allow one concurrent deployment
	concurrency:
	group: "pages"
	cancel-in-progress: true

	jobs:
	# Single deploy job since we're just deploying
	deploy:
	environment:
	name: github-pages
	url: ${{ steps.deployment.outputs.page_url }}
	runs-on: ubuntu-latest

	steps:
	- name: Checkout
	uses: actions/checkout@v3
	- name: Run the build process with Docker
	uses: addnab/docker-run-action@v3
	with:
	image: squidfunk/mkdocs-material:latest
	options: -v ${{ github.workspace }}:/root
	run: \|
	cd /root/en
	mkdocs build
	cd /root
	SITE_URL=${{ vars.SITE_URL }} mkdocs build
	mv /root/en/site /root/site/en
	# patch 404 page, remove absolute path
	[ -z "${{ vars.SITE_URL }}" ] && sed 's@="/@="@g' -i /root/site/404.html
	sed 's@="/@="@g' -i /root/site/en/404.html
	# patch language change url
	find /root/site -name ".htm" -print0 \| xargs -0 sed -i 's/href=" .."/href=".."/g'
	find /root/site -name ".htm" -print0 \| xargs -0 sed -i 's@/ .."@/.."@g'
	- name: Setup Pages
	uses: actions/configure-pages@v3
	- name: Upload artifact
	uses: actions/upload-pages-artifact@v1
	with:
	# Upload entire repository
	path: 'site'
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v1

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