Add small MariaDB docker role, for running on a single node #1779

	# Github action to run syntax check

	name: syntax
	on:
	push:
	paths:
	- 'environments/**'
	- 'group_vars/**'
	- 'roles/**'
	- '.github/workflows/syntax.yml'
	pull_request:
	paths:
	- 'environments/**'
	- 'group_vars/**'
	- 'roles/**'
	- '.github/workflows/syntax.yml'

	jobs:
	build:
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2

	- name: Set up Python 3.8
	uses: actions/setup-python@v2
	with:
	python-version: 3.8

	- name: Installing dependencies
	run: pip install jinja2 ansible

	- name: Run syntax check
	run: ./scripts/syntax-check

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