add: a workflow to check if docker containers can be built if the fil… #1

	name: Test Docker images (scheduled)

	on:
	pull_request:
	paths:
	# Run only when DockerFile files are modified
	- "docker/**"

	concurrency:
	group: docker-image-builds
	cancel-in-progress: false

	jobs:
	name: "Build all modified docker images"
	runs-on: ubuntu-latest
	steps:
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v1
	- name: Check out code
	uses: actions/checkout@v3
	- name: Get changed files
	id: changed-files
	uses: tj-actions/changed-files@3f54ebb830831fc121d3263c1857cfbdc310cdb9 #v42
	with:
	files: docker/**
	- name: Run step if only the files listed above change
	if: steps.changed-files.outputs.only_changed == 'true'
	env:
	CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files}}
	run: \|
	for file in ${CHANGED_FILES}; do
	echo "$file was changed"
	done
	- name: Build Docker images
	strategy:
	matrix:
	docker-file: ${{ steps.changed-files.outputs.all_changed_files}}
	uses: docker/build-push-action@v4
	with:
	context: ${{ matrix.docker-file }}
	push: False

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