ci: add mdlint #17

	name: CI
	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	jobs:
	# It's recommended to run golangci-lint in a job separate from other jobs (go test, etc) because different jobs run in parallel.
	go-linter:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-go@v4
	with:
	go-version: '1.20'
	cache: true
	- name: golangci-lint
	uses: golangci/golangci-lint-action@v3
	with:
	# Pin the version in case all the builds start to fail at the same time.
	# There may not be an automatic way (e.g., dependabot) to update a specific parameter of a GitHub Action,
	# so we will just update it manually whenever it makes sense (e.g., a feature that we want is added).
	version: v1.53.3
	args: --fix=false --timeout=5m
	build:
	strategy:
	fail-fast: false
	matrix:
	go: [ '1.17', '1.18', '1.19', '1.20' ]
	os: [ 'ubuntu-22.04', 'windows-2022' ]

	name: ${{ matrix.os }} / Go ${{ matrix.go }}
	runs-on: ${{ matrix.os }}
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-go@v4
	with:
	go-version: ${{ matrix.go }}
	cache: false
	- name: build
	run: make build
	- name: test
	run: make test
	go-mod-tidy-check:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-go@v4
	with:
	go-version-file: go.mod
	cache: true
	# TODO: Use `go mod tidy --check` after https://github.com/golang/go/issues/27005 is fixed.
	- run: go mod tidy
	- run: git diff --exit-code
	mdlint:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: avto-dev/markdown-lint@v1
	with:
	args: '*/.md'

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