Merge pull request #194748 from Homebrew/install-curl-if-needed #1411

	name: actionlint

	on:
	push:
	branches:
	- master
	paths:
	- '.github/workflows/*.ya?ml'
	pull_request:
	paths:
	- '.github/workflows/*.ya?ml'

	defaults:
	run:
	shell: bash -xeuo pipefail {0}

	concurrency:
	group: "actionlint-${{ github.ref }}"
	cancel-in-progress: ${{ github.event_name == 'pull_request' }}

	env:
	HOMEBREW_DEVELOPER: 1
	HOMEBREW_NO_AUTO_UPDATE: 1
	HOMEBREW_NO_ENV_HINTS: 1

	jobs:
	workflow_syntax:
	if: github.repository_owner == 'Homebrew'
	runs-on: ubuntu-22.04
	container:
	image: ghcr.io/homebrew/ubuntu22.04:master
	steps:
	- name: Set up Homebrew
	id: setup-homebrew
	uses: Homebrew/actions/setup-homebrew@master
	with:
	core: true
	cask: false
	test-bot: false

	- name: Set up actionlint
	env:
	HOMEBREW_TAP_REPOSITORY: ${{ steps.setup-homebrew.outputs.repository-path }}
	run: \|
	brew install actionlint shellcheck

	# Annotations work only relative to GITHUB_WORKSPACE
	(shopt -s dotglob; rm -rf "${GITHUB_WORKSPACE:?}"/; mv "${HOMEBREW_TAP_REPOSITORY:?}"/ "$GITHUB_WORKSPACE")
	rmdir "$HOMEBREW_TAP_REPOSITORY"
	ln -vs "$GITHUB_WORKSPACE" "$HOMEBREW_TAP_REPOSITORY"

	# Setting `shell: /bin/bash` prevents shellcheck from running on
	# those steps, so let's change them to `shell: bash` for linting.
	sed -i 's\|shell: /bin/bash -x\|shell: bash -x\|' .github/workflows/.yml
	# The JSON matcher needs to be accessible to the container host.
	cp "$(brew --repository)/.github/actionlint-matcher.json" "$HOME"
	echo "::add-matcher::$HOME/actionlint-matcher.json"

	- run: actionlint

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