ci: add dco check #233

	name: Check code quality

	on:
	pull_request:

	jobs:
	check_commits:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0 # Fetch all history for all branches and tags

	- name: Check commit names
	run: \|
	# We don't have a base ref to check against if we aren't in a
	# pull_request workflow.
	BASE=${{ github.base_ref }}
	if [[ -z "$BASE" ]]; then
	exit 0
	fi

	commit_titles() {
	git log --format=%s origin/"$BASE"..HEAD --skip=1
	}

	commit_titles \| TERM=xterm-color .github/scripts/check-commit-titles.sh

	check_reuse_compliance:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: REUSE Compliance Check
	uses: fsfe/reuse-action@v4

	check_dco:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Python 3.x
	uses: actions/setup-python@v4
	with:
	python-version: '3.x'
	- name: Check DCO
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	pip3 install -U dco-check
	dco-check

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