CI: Add 'staging' radix environment #2073

	# build and test some end points
	name: Build and deploy docs for fmu-dataio

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

	jobs:
	build_docs:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

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

	- name: Install fmu-dataio
	run: \|
	pip install -U pip
	pip install .[docs]

	- name: Generate examples
	run: sh examples/run_examples.sh

	- name: Build documentation
	run: sphinx-build -b html docs/src build/docs/html -j auto

	- name: Update GitHub pages
	if: github.repository_owner == 'equinor' && github.ref == 'refs/heads/main'
	run: \|
	cp -R ./build/docs/html ../html
	git config --local user.email "fmu-dataio-github-action"
	git config --local user.name "fmu-dataio-github-action"
	git fetch origin gh-pages
	git checkout --track origin/gh-pages
	git clean -f -f -d -x # Double -f is intentional.
	git rm -r *
	cp -R ../html/* .
	touch .nojekyll # If not, github pages ignores _* directories.
	git add .
	echo "Ready for commit"
	if git diff-index --quiet HEAD; then
	echo "No changes in documentation. Skip documentation deploy."
	else
	git commit -m "Update Github Pages"
	git push "https://${{ github.actor }}:${{ secrets.GITHUB_TOKEN }}@github.com/${{ github.repository }}.git" gh-pages
	fi

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