Summarize improvements from old PRs #55

	name: Lint and Test Helm Chart

	on:
	pull_request:
	paths:
	- charts/**

	jobs:
	lint-test:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 0

	- name: Set up Helm
	uses: azure/setup-helm@v1
	with:
	version: v3.5.1

	# Python is required because `ct lint` runs Yamale (https://github.com/23andMe/Yamale) and
	# yamllint (https://github.com/adrienverge/yamllint) which require Python
	- name: Set up Python
	uses: actions/setup-python@v2
	with:
	python-version: 3.7

	- name: Set up chart-testing
	uses: helm/[email protected]

	- name: Run chart-testing (list-changed)
	id: list-changed
	run: \|
	changed=$(ct list-changed --config .github/ct.yaml)
	if [[ -n "$changed" ]]; then
	echo "::set-output name=changed::true"
	fi

	- name: Run chart-testing (lint)
	run: ct lint --config .github/ct.yaml

	- name: Create kind cluster
	uses: helm/[email protected]
	if: steps.list-changed.outputs.changed == 'true'

	- name: Run chart-testing (install)
	run: ct install --config .github/ct.yaml

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