Add GPG + pinentry #153

	name: Test Docker images

	on:
	pull_request:
	paths:
	- "Dockerfile.*"

	- "dask-worker/*"
	- "jupyterhub/*"
	- "jupyterlab/*"

	- "scripts/*"

	- ".github/workflows/build-push-docker.yaml"
	- ".github/workflows/test-images.yaml"

	env:
	DOCKER_ORG: nebari
	GITHUB_SHA: ${{ github.sha }}
	GPU_BASE_IMAGE: nvidia/cuda:11.7.1-base-ubuntu20.04
	GPU_IMAGE_SUFFIX: gpu
	BASE_IMAGE: ubuntu:20.04

	# https://docs.github.com/en/actions/using-jobs/using-concurrency
	concurrency:
	# only cancel in-progress jobs or runs for the current workflow - matches against branch & tags
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build-test-images:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	dockerfile:
	- jupyterlab
	- jupyterhub
	- dask-worker
	platform:
	- gpu
	- cpu
	exclude:
	# excludes JupyterHub/GPU
	- dockerfile: jupyterhub
	platform: gpu
	steps:
	- name: Checkout Repository 🛎
	uses: actions/checkout@v3

	- name: Lint Dockerfiles 🔍
	uses: jbergstroem/hadolint-gh-action@v1
	with:
	dockerfile: Dockerfile.${{ matrix.dockerfile }}
	output_format: tty
	error_level: 0

	- name: "Set BASE_IMAGE and Image Suffix 📷"
	if: ${{ matrix.platform == 'gpu' }}
	run: \|
	echo "GPU Platform Matrix"
	echo "BASE_IMAGE=$GPU_BASE_IMAGE" >> $GITHUB_ENV
	echo "IMAGE_SUFFIX=-$GPU_IMAGE_SUFFIX" >> $GITHUB_ENV

	- name: Build Image 🛠
	run: \|
	docker build -t ${DOCKER_ORG}/${{ matrix.dockerfile }}${{ env.IMAGE_SUFFIX }}:${{ env.GITHUB_SHA }} \
	--build-arg BASE_IMAGE=$BASE_IMAGE \
	-f Dockerfile.${{ matrix.dockerfile }} .

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