WIP: [docker] [ci] fix dockerfiles, test docker builds in CI #4

	name: Docker

	on:
	push:
	branches:
	- master
	pull_request:
	branches:
	- master
	workflow_dispatch:

	# automatically cancel in-progress builds if another commit is pushed
	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	name: build
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v3
	- name: dockerfile-cli
	run: \|
	docker build \
	--build-arg LIGHTGBM_GIT_REF=${{ github.sha }} \
	- < ./docker/dockerfile-python
	- name: dockerfile-r
	run: \|
	docker build \
	--build-arg LIGHTGBM_GIT_REF=${{ github.sha }} \
	- < ./docker/dockerfile-r
	- name: dockerfile-python
	run: \|
	docker build \
	--build-arg LIGHTGBM_GIT_REF=${{ github.sha }} \
	- < ./docker/dockerfile-python
	- name: dockerfile.gpu
	run: \|
	docker build \
	--build-arg LIGHTGBM_GIT_REF=${{ github.sha }} \
	- < ./docker/gpu/dockerfile.gpu
	- name: dockerfile-cli-only.gpu
	run: \|
	docker build \
	--build-arg LIGHTGBM_GIT_REF=${{ github.sha }} \
	- < ./docker/gpu/dockerfile-cli-only.gpu
	- name: dockerfile-cli-only-distroless.gpu
	run: \|
	docker build \
	--build-arg LIGHTGBM_GIT_REF=${{ github.sha }} \
	- < ./docker/gpu/dockerfile-cli-only-distroless.gpu
	all-docker-jobs-successful:
	if: always()
	runs-on: ubuntu-latest
	needs: [build]
	steps:
	- name: Note that all tests succeeded
	uses: re-actors/[email protected]
	with:
	jobs: ${{ toJSON(needs) }}

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