feat(proposal): Dogfooding of trestle in the oscal-compass community #2

	name: Validate proposals with trestle
	on:
	pull_request:
	branches:
	- main
	jobs:
	validate:
	runs-on: ubuntu-latest
	steps:
	- name: Don't mess with line endings
	run: \|
	git config --global core.autocrlf false

	- uses: actions/checkout@v4
	with:
	submodules: true

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.11'

	- uses: actions/cache@v4
	with:
	path: ~/.cache/pip
	key: ubuntu-latest-proposals
	restore-keys: \|
	ubuntu-latest-proposals

	- name: Install trestle
	run: pip install -U compliance-trestle

	- name: Run trestle validate
	run: trestle validate -tn proposals -hv

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