add linter from github actions #1

	name: CI

	on: [push, pull_request]

	jobs:
	build:
	runs-on: ubuntu-latest

	services:
	docker:
	image: docker:20.10.20
	options: --privileged

	steps:
	- name: Checkout code
	uses: actions/checkout@v2

	- name: Set up Docker Buildx
	uses: docker/setup-buildx-action@v2

	- name: Cache Docker layers
	uses: actions/cache@v2
	with:
	path: /tmp/.buildx-cache
	key: ${{ runner.os }}-buildx-${{ github.sha }}
	restore-keys: \|
	${{ runner.os }}-buildx-

	- name: Login to GitHub Container Registry
	uses: docker/login-action@v2
	with:
	registry: ghcr.io
	username: ${{ github.actor }}
	password: ${{ secrets.GITHUB_TOKEN }}

	- name: Pull and build Docker image
	run: \|
	docker pull ghcr.io/${{ github.repository }}:builder-${{ github.ref_name }} \|\| true
	docker build --cache-from ghcr.io/${{ github.repository }}:builder-${{ github.ref_name }} -t ghcr.io/${{ github.repository }}:builder-${{ github.ref_name }} -f contrib/containers/ci/Dockerfile .
	docker push ghcr.io/${{ github.repository }}:builder-${{ github.ref_name }}

	- name: Run lint-all.sh
	run: \|
	docker run --rm -v ${{ github.workspace }}:/workspace -w /workspace ghcr.io/${{ github.repository }}:builder-${{ github.ref_name }} ./test/lint/lint-all.sh

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