new(CI): enforce the helm docs #1

	name: Check Helm Docs

	on:
	pull_request:

	jobs:
	readme:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout repository
	uses: actions/checkout@v2

	- name: Run Helm Docs and check the outcome
	run: \|
	for chart in event-generator falco k8s-metacollector; do
	docker run \
	--rm \
	--workdir=/helm-docs \
	--volume "$(pwd):/helm-docs" \
	-u $(id -u) \
	jnorwood/helm-docs:v1.11.0 \
	helm-docs -c ./charts/$chart -t ./README.gotmpl -o ./README.md
	done
	exit_code=$(git diff --exit-code)
	exit ${exit_code}

	- name: Print a comment in case of failure
	run: \|
	echo "The README.md filer are not up to date.

	Please, run make docs before pushing."
	exit 1
	if: \|
	failure() && github.event.pull_request.head.repo.full_name == github.repository

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