Improve error message when `SYS_ADMIN` is missing #183

	name: Deploy homepage
	on:
	push:
	branches:
	- master
	paths:
	- 'examples/**'
	- 'docs/**'
	- 'zeus/**'
	- 'mkdocs.yml'
	- 'docker/Dockerfile'
	- '.github/workflows/deploy_homepage.yaml'

	env:
	SITE_ANALYTICS: google

	jobs:
	deploy:
	runs-on: ubuntu-latest
	if: github.repository_owner == 'ml-energy'
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Setup Python
	uses: actions/setup-python@v4
	with:
	python-version: 3.9
	cache: 'pip'
	- run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
	- uses: actions/cache@v3
	with:
	key: mkdocs-material-${{ env.cache_id }}
	path: .cache
	restore-keys: \|
	mkdocs-material-
	- name: Install homepage build dependencies
	run: pip install '.[docs]'
	- name: Build homepage
	run: mkdocs gh-deploy --force

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