DM-47700: Add first draft of crowded field section #183

	name: CI

	"on": [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0 # full history for metadata
	submodules: true

	- name: Set up Python
	uses: actions/setup-python@v5
	with:
	python-version: "3.10"

	- name: Python install
	run: \|
	python -m pip install --upgrade pip
	python -m pip install "lander<2.0.0"

	- name: Login to Docker Hub
	uses: docker/login-action@v1
	with:
	username: sqrereadonly
	password: ${{ secrets.DOCKERHUB_SQREREADONLY_TOKEN }}

	- name: TeX build
	run: \|
	docker run --rm -v `pwd`:/workspace -w /workspace lsstsqre/lsst-texmf:latest sh -c 'make'

	- name: Landing page upload
	if: ${{ github.event_name == 'push' }}
	env:
	LTD_PASSWORD: ${{ secrets.LTD_PASSWORD }}
	LTD_USERNAME: ${{ secrets.LTD_USERNAME }}
	run: \|
	lander --upload --pdf SITCOMTN-149.pdf --lsstdoc SITCOMTN-149.tex --ltd-product sitcomtn-149

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