Adding -file option to signature method. #805

	name: Publish docs

	on:
	push:
	branches:
	- master

	jobs:
	docs:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v1
	# Pinned to the SHA that's currently tagged as 0.4
	- uses: ammaraskar/sphinx-action@8b4f60114d7fd1faeba1a712269168508d4750d2
	with:
	docs-folder: "documentation/src/"
	- name: Commit documentation changes
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	run: \|
	git clone https://github.com/gorpipe/gor.git --branch gh-pages --single-branch gh-pages
	cp -r documentation/src/_build/html/* gh-pages/
	cd gh-pages
	git config --local user.email "action@github.com"
	git config --local user.name "GitHub Action"
	git add .
	# Commit fails if no changes are present. If it succeeds we set $GIT_PUSH to true,
	# otherwise we just return true so the pipeline doesn't fail.
	git commit -m "Update documentation" -a && GIT_PUSH=true \|\| true
	if [[ "$GIT_PUSH" = true ]]; then
	git push "https://${GITHUB_ACTOR}:${GITHUB_TOKEN}@github.com/gorpipe/gor.git" HEAD:gh-pages
	fi

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