Shorhen the lesson descriptions and SEO metadata for clarity and enga… #175

	name: Build and Deploy MkDocs

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	permissions:
	contents: write

	jobs:
	build-docs:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Set up Python
	id: setup-python
	uses: actions/setup-python@v4
	with:
	python-version: '3.12'

	- name: Cache and install system dependencies for social cards
	uses: awalsh128/cache-apt-pkgs-action@latest
	with:
	packages: libcairo2-dev libfreetype6-dev libffi-dev libjpeg-dev libpng-dev libz-dev
	version: 1.0

	- name: Cache pip dependencies
	uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: pip-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-${{ hashFiles('requirements-dev.txt') }}
	restore-keys: \|
	pip-${{ runner.os }}-${{ steps.setup-python.outputs.python-version }}-

	- name: Install dependencies with pip
	run: \|
	python -m pip install --upgrade pip
	pip install -r requirements-dev.txt

	- name: Optimize images for web
	run: \|
	python tools/optimize_images.py --quality 75 --max-width 1200 --max-height 630 --overwrite
	- name: Build MkDocs site
	env:
	JUPYTER_PLATFORM_DIRS: 1 # Suppress Jupyter deprecation warnings
	run: \|
	mkdocs build --strict --verbose
	- name: Deploy to GitHub Pages
	uses: peaceiris/actions-gh-pages@v3
	if: github.event_name == 'push' && github.ref == 'refs/heads/main'
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}
	publish_dir: ./site
	cname: pytorchcourse.com

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