minor changes to README.md, env requirements #396

	name: File Linting
	on: # yamllint disable-line rule:truthy
	push:
	branches:
	- "*"
	pull_request:
	branches:
	- "*"

	jobs:

	yaml-lint:
	runs-on: ubuntu-latest
	steps:
	- name: Code Checkout
	uses: actions/checkout@v2
	- name: Validate YAML
	uses: ibiqlik/action-yamllint@v3

	bash-lint:
	name: bash-lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v2
	- name: Run ShellCheck
	uses: ludeeus/action-shellcheck@master
	with:
	version: v0.8.0
	severity: warning

	containerfile-lint:
	runs-on: ubuntu-latest
	name: containerfile-lint
	steps:
	- uses: actions/checkout@v2
	- name: Run Hadolint
	uses: jbergstroem/hadolint-gh-action@v1
	with:
	dockerfile: "./docker/Dockerfile*"

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