[markdown] use build_runner to build js & wasm (#1969) #5

	# Publish the GitHub Pages site for this repo.

	name: "Deploy Pages"

	on:
	# Run on pushes to the default branch.
	push:
	branches: [ main ]
	paths:
	- '.github/workflows/deploy_pages.yaml'
	- 'pkgs/markdown/**'

	jobs:
	deploy:
	permissions:
	contents: read
	pages: write
	id-token: write
	runs-on: ubuntu-latest
	environment:
	name: github-pages
	url: ${{steps.deployment.outputs.page_url}}

	steps:
	- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
	- uses: dart-lang/setup-dart@e630b99d28a3b71860378cafdc2a067c71107f94

	# Build the markdown playground.
	- run: dart pub get
	working-directory: pkgs/markdown
	- run: dart run build_runner build -o example:build --release
	working-directory: pkgs/markdown

	# Create the _site directory.
	- run: mkdir _site
	- run: cp -r pkgs/markdown/build _site/markdown

	# Deploy to GitHub Pages.
	- uses: actions/configure-pages@v5
	- uses: actions/upload-pages-artifact@v3
	with:
	path: _site
	- uses: actions/deploy-pages@v4

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