Added to README #4

	name: Apptainer Build
	on:
	push:
	branches:
	- main
	paths:
	- README.md.esh
	- .github/workflows/scripts/esh
	- .github/workflows/build-documentation.yml

	jobs:
	build-and-push-image:
	runs-on: ubuntu-latest
	name: Build documentation
	permissions: write-all
	steps:
	- name: Check out code for the container build
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Build documentation
	shell: bash
	run: \|
	set -eux -o pipefail

	# Run esh to fill in the variables:
	"${GITHUB_WORKSPACE}/.github/workflows/scripts/esh" "${GITHUB_WORKSPACE}/README.md.esh" > "${GITHUB_WORKSPACE}/README.md"

	# Stage files:
	git add README.md

	# Build additions to commit message:
	commit_args=()

	# Get the last commit message, if any:
	last_commit_msg="$(git log -1 --pretty=format:%B \|\| true)"

	if git diff --staged --name-only "README.md" \| grep -Fq "README.md"; then
	commit_args+=(-m "GITHUB_ACTION=\"${GITHUB_ACTION:-}\": Templated \"README.md\" for GITHUB_REPOSITORY=\"${GITHUB_REPOSITORY}\"")
	fi

	if (( "${#commit_args[@]}" > 1 )); then

	# Don't append to commit message:
	if [[ "${GITHUB_REF_TYPE:-}" == "tag" ]] && [[ "${GITHUB_REF}" =~ ^.@.$ ]]; then
	echo "Not appending commit messages because this is a tagged release" >&2
	commit_args=()
	fi

	# Set up git config for push:
	git config --local user.email "${{ github.event.sender.id }}+${{ github.event.sender.login }}@users.noreply.github.com"
	git config --local user.name ${{ github.event.sender.login }}
	git commit -a "${last_commit_msg:+-m ${last_commit_msg:-}}" "${commit_args[@]}" && git push --force
	fi

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