Add `yarn rw dev` option to pass any Webpack config as a string #18620

	name: Lint, build and run tests

	on:
	push:
	branches: [main]
	pull_request:
	types: [opened, edited, synchronize, reopened]

	jobs:
	build:
	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os: [ubuntu-latest, windows-latest]
	node-version: ['12', '14']
	fail-fast: false
	name: ${{ matrix.os }} \| Node ${{ matrix.node-version }} latest
	steps:
	- uses: actions/checkout@v2
	- name: Setup node
	uses: actions/setup-node@v1
	with:
	node-version: ${{ matrix.node-version }}
	- name: Print node and yarn versions
	run: \|
	node --version
	yarn --version
	- name: Install dependencies
	run: yarn install --frozen-lockfile --check-files
	- name: Run ESLint
	run: yarn lint
	env:
	CI: true
	- name: Build
	run: yarn build
	- name: Run tests
	run: yarn test
	env:
	CI: true

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