Update getting-started.md #18

	name: Build and Deploy

	on:
	push: ~
	workflow_dispatch: ~

	jobs:
	build-and-deploy:
	runs-on: ubuntu-latest
	container: strongboxci/mkdocs:base
	env:
	# DEPLOY_URL=https://strongbox.github.io, but it's a "secrets" to allow easier changing if necesary without changing the code.
	DEPLOY_URL: "${{ secrets.DEPLOY_URL }}"
	GOOGLE_ANALYTICS_KEY: "${{ secrets.GOOGLE_ANALYTICS_KEY }}"
	steps:
	# Downloads a copy of the code in your repository before running CI tests
	- name: Check out repository code
	uses: actions/checkout@v2
	with:
	token: ${{ secrets.GH_TOKEN }}
	- name: Get short SHA
	id: slug
	run: echo "::set-output name=short_sha::$(echo ${GITHUB_SHA} \| cut -c1-7)"
	- name: Build
	run: mkdocs build
	- name: Setup upstream
	if: github.ref == 'refs/heads/master'
	run: \|
	git config user.name "${{ secrets.GH_USER }}"
	git config user.email "${{ secrets.GH_EMAIL }}"
	git remote add strongbox.github.io "https://${{ secrets.GH_TOKEN }}@github.com/strongbox/strongbox.github.io"
	git fetch strongbox.github.io
	- name: Prepare built assets
	if: github.ref == 'refs/heads/master'
	run: \|
	git checkout --orphan gh-pages
	find . -maxdepth 1 ! -name "site" ! -name ".git*" ! -name "." -exec git rm -rf {} \;
	git add --force site
	git commit -m "strongbox/strongbox-docs#${{ steps.slug.outputs.short_sha }}: ${{ github.event.head_commit.message }}"
	git log -n 1 --format=oneline
	- name: Deploy
	if: github.ref == 'refs/heads/master'
	run: \|
	git push strongbox.github.io `git subtree split --prefix site gh-pages`:master --force

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