ci: dump context on failure #5636

	name: validate

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	on:
	workflow_dispatch:
	push:
	branches:
	- 'master'
	- 'v[0-9]+.[0-9]+'
	tags:
	- 'v*'
	- 'dockerfile/*'
	pull_request:

	env:
	SETUP_BUILDX_VERSION: "latest"
	SETUP_BUILDKIT_IMAGE: "moby/buildkit:latest"

	jobs:
	prepare:
	runs-on: ubuntu-22.04
	outputs:
	targets: ${{ steps.targets.outputs.matrix }}
	steps:
	-
	name: Checkout
	uses: actions/checkout@v3
	-
	name: Matrix
	id: targets
	run: \|
	echo "matrix=$(docker buildx bake validate --print \| jq -cr '.group.validate.targets')" >> $GITHUB_OUTPUT

	validate:
	runs-on: ubuntu-22.04
	needs:
	- prepare
	strategy:
	fail-fast: false
	matrix:
	target: ${{ fromJson(needs.prepare.outputs.targets) }}
	steps:
	-
	name: Checkout
	uses: actions/checkout@v3
	-
	name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2
	with:
	version: ${{ env.SETUP_BUILDX_VERSION }}
	driver-opts: image=${{ env.SETUP_BUILDKIT_IMAGE }}
	buildkitd-flags: --debug
	-
	name: Validate
	uses: docker/bake-action@v2
	with:
	targets: ${{ matrix.target }}

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