Add instruction to source ROS and add note about warnings #426

	name: Docs

	on:
	push:
	branches: [ main ]
	pull_request:
	branches: [ main ]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:

	- name: Checkout
	uses: actions/checkout@v2

	# Handle dependencies here instead of conda_env.yaml
	# because some packages are conda-forge only,
	# which makes the env build much more slowly.

	- name: Install dependencies
	run: \|
	sudo apt update
	sudo apt install texlive-latex-extra dvipng
	sudo pip3 install -U setuptools
	sudo pip3 install -U -r docs2/requirements.txt

	- name: Build Docs
	run: \|
	cd docs2
	make html

	- name: Disable github Jekyll
	run: \|
	touch docs2/_build/html/.nojekyll

	- name: Deploy
	if: github.ref == 'refs/heads/main'
	uses: JamesIves/github-pages-deploy-action@v4
	with:
	folder: docs2/_build/html # The folder the action should deploy.

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