ci: use github actions cache #110

	name: Build Pull Request

	on:
	pull_request:
	branches:
	- '*'

	concurrency:
	group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
	cancel-in-progress: true

	jobs:
	build-test:
	runs-on: [gpu]
	steps:
	- name: Define environment variables
	run: \|
	echo IMAGE_NAME=ghcr.io/$(echo ${{ github.repository }} \| tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
	echo TAG=$(echo "PR-${{ github.event.pull_request.number }}") >> $GITHUB_ENV

	- name: Checkout code
	uses: actions/checkout@v4
	with:
	submodules: true

	- name: Copy external assets
	run: cp /home/runner/NVIDIA-OptiX-SDK-7.6.0-linux64-x86_64.sh .

	- name: Set up docker
	uses: docker/setup-buildx-action@v3

	- name: Login to GitHub container registry
	uses: docker/login-action@v3
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Build and export to Docker
	uses: docker/build-push-action@v5
	with:
	context: .
	tags: ${{ env.IMAGE_NAME }}:${{ env.TAG }}
	load: true
	cache-from: \|
	${{ env.IMAGE_NAME }}:latest
	type=gha
	cache-to: type=gha,mode=max

	- name: Run tests
	run: \|
	docker run --rm ${{ env.IMAGE_NAME }}:${{ env.TAG }} tests/test_opticks.sh
	docker rmi ${{ env.IMAGE_NAME }}:${{ env.TAG }}

Provide feedback