Add `docker-compose` support for easier and more portable environment set-up #199

	# Inspired by
	# https://github.com/huggingface/peft/blob/main/.github/workflows/test-docker-build.yml
	name: Test Dockerfiles

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

	env:
	PYTHON_VERSION: "3.10"

	jobs:
	get_changed_files:
	name: Detect modified Dockerfiles
	runs-on: ubuntu-latest
	outputs:
	matrix: ${{ steps.set-matrix.outputs.matrix }}
	steps:
	- name: Check out code
	uses: actions/checkout@v4

	- name: Get changed files
	id: changed-files
	uses: tj-actions/changed-files@v44
	with:
	files: docker/**
	json: "true"

	- name: Run step if only the files listed above change
	if: steps.changed-files.outputs.any_changed == 'true'
	id: set-matrix
	env:
	ALL_CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
	run: \|
	echo "matrix=${{ steps.changed-files.outputs.all_changed_files}}" >> $GITHUB_OUTPUT


	build_modified_dockerfiles:
	name: Build modified Docker images
	needs: get_changed_files
	runs-on:
	group: aws-general-8-plus
	if: ${{ needs.get_changed_files.outputs.matrix }} != ''
	strategy:
	fail-fast: false
	matrix:
	docker-file: ${{ fromJson(needs.get_changed_files.outputs.matrix) }}
	steps:
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3

	- name: Check out code
	uses: actions/checkout@v4

	- name: Build Docker image
	uses: docker/build-push-action@v5
	with:
	file: ${{ matrix.docker-file }}
	context: .
	push: False
	build-args: PYTHON_VERSION=${{ env.PYTHON_VERSION }}

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