Add CI to check that we can build the production site #3

	name: Test PR

	on:
	pull_request:
	types: [ opened, synchronize, reopened ]

	jobs:
	build:
	runs-on: ubuntu-latest
	services:
	registry:
	image: registry:2
	ports:
	- 5000:5000
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	with:
	# this is required for the subsequent build to be able to push to the registry on localhost:5000
	driver-opts: network=host

	- name: Build Docker image
	uses: docker/build-push-action@v6
	with:
	context: .
	push: true
	tags: localhost:5000/kroxy-jekyll:latest
	cache-from: type=gha
	cache-to: type=gha,mode=max

	- name: Build with Jekyll
	run: \|
	docker run \
	--rm \
	-u "$(id -u):$(id -g)" \
	-v "$(pwd):/site" \
	localhost:5000/kroxy-jekyll:latest \
	bash -c 'eval "$(rbenv init -)" && cp -r /css/_sass/bootstrap /site/_sass/ && JEKYLL_ENV=production bundle exec jekyll build --config=_config.yml'

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