Update docker/login-action action to v3 #648

	name: Format

	on:
	# code review question: this commits directly to PR branches.
	# that seems like what we're looking for, but we could also format only
	# committed code.
	pull_request:
	branches:
	- main

	# cancels in-progress jobs on this pull request
	# avoids wasted work when a new commit is pushed
	concurrency:
	group: format-${{ github.head_ref \|\| github.run_id }}
	cancel-in-progress: true

	permissions: read-all

	jobs:
	terraform-formatting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: setup terraform
	uses: hashicorp/setup-terraform@v2

	- name: terraform fmt
	id: tf_fmt
	run: terraform fmt -check -recursive -diff cloud

	shell-formatting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Run the shell checker
	uses: luizm/action-sh-checker@master
	env:
	SHELLCHECK_OPTS: -s bash -S error
	sh_checker_exclude: '*.md'
	SHFMT_OPTS:
	-bn -ci -i 2
	# -i 2 indent 2 spaces
	# -bn binary ops like && and \| may start a line
	# -ci switch cases will be indented

	python-formatting:
	name: python-formatting
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: run YAPF to test if python code is correctly formatted
	uses: AlexanderMelde/[email protected]
	with:
	args: "--verbose --style='{based_on_style: google, SPLIT_BEFORE_FIRST_ARGUMENT:true}'"

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