Add flat tree parent definition #371

	name: Build
	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main
	jobs:
	build:
	name: Build
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 2
	# Note: `python` will also be this version, which various scripts depend on.
	- uses: actions/setup-python@v3
	with:
	python-version: "3.10"
	# Note: `make deploy` will do a deploy dry run on PRs.
	- run: make deploy
	env:
	SERVER: ${{ secrets.MARQUEE_SERVER }}
	SERVER_PUBLIC_KEY: ${{ secrets.MARQUEE_PUBLIC_KEY }}
	SERVER_DEPLOY_KEY: ${{ secrets.MARQUEE_DEPLOY_KEY }}

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