Add alt text to img tags #279

	name: Site Validation

	on:
	pull_request:

	jobs:
	validate:
	runs-on: ubuntu-latest

	env:
	Codeql.Enabled: true

	steps:
	- name: Checkout
	uses: actions/checkout@v3

	- name: Restore NPM cache
	uses: actions/cache@v3
	with:
	path: ~/.npm
	key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
	restore-keys: ${{ runner.os }}-node-

	- name: Rebuild and validate website
	run: scripts/rebuild.sh

	- name: Check for differences
	run: \|
	if ! git diff --quiet; then
	echo "::error ::Detected changes when regenerating website."
	git diff --stat
	exit 1
	fi

Provide feedback