Add nostart-stop-gc #46

	name: documentation
	on:
	push:
	branches:
	- unstable
	jobs:
	build:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2

	- name: Install bazelisk
	run: \|
	curl -LO "https://github.com/bazelbuild/bazelisk/releases/download/v1.11.0/bazelisk-linux-amd64"
	mkdir -p "${GITHUB_WORKSPACE}/bin/"
	mv bazelisk-linux-amd64 "${GITHUB_WORKSPACE}/bin/bazel"
	chmod +x "${GITHUB_WORKSPACE}/bin/bazel"

	- name: Install Swift dependencies
	run: \|
	sudo apt-get install clang libicu-dev
	wget https://download.swift.org/swift-5.6.1-release/ubuntu2004/swift-5.6.1-RELEASE/swift-5.6.1-RELEASE-ubuntu20.04.tar.gz
	tar xzf swift-5.6.1-RELEASE-ubuntu20.04.tar.gz
	echo "$(pwd)/swift-5.6.1-RELEASE-ubuntu20.04/usr/bin" >> $GITHUB_PATH

	- name: Setup clang
	run: \|
	sudo apt -y install clang llvm
	./bazel/setup_clang.sh

	- name: Clean up documentation branch
	run: \|
	git branch -D documentation \|\| true
	git checkout -b documentation

	- name: Run docc
	run: \|
	cd "${GITHUB_WORKSPACE}" && ./scripts/docc.sh

	- name: Add and commit documentation
	run: \|
	git config --global user.email "docbot@github.com"
	git config --global user.name "docbot"
	cd "${GITHUB_WORKSPACE}" && git add "docs/*" && git commit -m "Update docs."

	- name: Push the new branch
	run: \|
	cd "${GITHUB_WORKSPACE}" && git push --force origin documentation:documentation

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