docs: Indicate how to use a custom config file with docker #2206

	name: Code Tests

	on:
	# This does not run on push to master, as tests will instead be run there as
	# part of the docker.yml workflow.
	pull_request:
	branches: [ master ]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- name: Checkout OpenActive Test Suite
	uses: actions/checkout@v2
	- name: Setup Node.js 18.17.1
	uses: actions/setup-node@v1
	with:
	node-version: 18.17.1
	- name: Install OpenActive Test Suite
	run: npm install
	- name: Run Checks on the Code (Test the Tests!)
	run: npm test

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