chore: Initial GHA workflow (#1)

This implements an initial GitHub Actions workflow for us - to be run on PRs and on `main` commits.

This just implements a really simple `style/fmt` check - running `prettier` on the `README.md`.

I assumed we'll stick with using a top-level `Makefile` for commands like in `m` and `link` - but open to alternatives, too!

Since I was adding a `package.json` and `node_modules` for this, I realized we were missing `.gitignore`s, so I added some a subset of the ignore files from `coder/m`

.eslintignore

@@ -0,0 +1,4 @@
+###############################################################################
+# COPY PASTA OF .gitignore
+###############################################################################
+node_modules

.github/workflows/coder.yaml

@@ -0,0 +1,100 @@
+name: coder
+
+on:
+  push:
+    branches:
+      - main
+      - "release/*"
+    tags:
+      - "*"
+
+  pull_request:
+    branches:
+      - main
+      - "release/*"
+
+  workflow_dispatch:
+
+permissions:
+  actions: none
+  checks: none
+  contents: read
+  deployments: none
+  issues: none
+  packages: none
+  pull-requests: none
+  repository-projects: none
+  security-events: none
+  statuses: none
+
+jobs:
+  style:
+    name: "style/${{ matrix.style }}"
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        style:
+          - fmt
+      fail-fast: false
+    permissions:
+      actions: write # for cancel-workflow-action
+      contents: read
+    steps:
+      - name: Cancel previous runs
+        if: github.event_name == 'pull_request'
+        uses: styfle/cancel-workflow-action@0.9.1
+
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          submodules: true
+
+      - name: Cache Node
+        id: cache-node
+        uses: actions/cache@v2
+        with:
+          path: |
+            **/node_modules
+            .eslintcache
+          key: js-${{ runner.os }}-test-${{ hashFiles('**/yarn.lock') }}
+
+      - name: Install node_modules
+        run: yarn install
+
+      - name: "make ${{ matrix.style }}"
+        run: "make --output-sync -j ${{ matrix.style }}"
+
+  test-go:
+    name: "test/go"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-go@v2
+        with:
+          go-version: "^1.17"
+
+      # Check that go is available
+      # TODO: Implement actual test run
+      - run: go version
+
+  test-js:
+    name: "test/js"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: actions/setup-node@v2
+        with:
+          node-version: "14"
+
+      # Check that node is available
+      # TODO: Implement actual test run
+      - run: node --version

.gitignore

@@ -0,0 +1,13 @@
+###############################################################################
+#                                 NOTICE                                      #
+# If you change this file, kindly copy-pasta your change into .prettierignore #
+# and .eslintignore as well. See the following discussions to understand why  #
+# we have to resort to this duplication (at least for now):                   #
+#                                                                             #
+# https://github.com/prettier/prettier/issues/8048                            #
+# https://github.com/prettier/prettier/issues/8506                            #
+# https://github.com/prettier/prettier/issues/8679                            #
+###############################################################################
+
+node_modules
+.eslintcache

.prettierignore

@@ -0,0 +1,7 @@
+###############################################################################
+# COPY PASTA OF .gitignore
+# https://github.com/prettier/prettier/issues/8048
+# https://github.com/prettier/prettier/issues/8506
+# https://github.com/prettier/prettier/issues/8679
+###############################################################################
+node_modules

Makefile

@@ -0,0 +1,12 @@
+fmt/prettier:
+	@echo "--- prettier"
+# Avoid writing files in CI to reduce file write activity
+ifdef CI
+	yarn run format:check
+else
+	yarn run format:write
+endif
+.PHONY: fmt/prettier
+
+fmt: fmt/prettier
+.PHONY: fmt

README.md

@@ -1,8 +1,12 @@
+[![coder](https://github.com/coder/coder/actions/workflows/coder.yaml/badge.svg)](https://github.com/coder/coder/actions/workflows/coder.yaml)
+[![codecov](https://codecov.io/gh/coder/coder/branch/main/graph/badge.svg?token=TNLW3OAP6G)](https://codecov.io/gh/coder/coder)
+
 # Coder v2
 
 This repository contains source code for Coder V2. Additional documentation:
+
 - [Workspaces V2 RFC](https://www.notion.so/coderhq/b48040da8bfe46eca1f32749b69420dd?v=a4e7d23495094644b939b08caba8e381&p=e908a8cd54804ddd910367abf03c8d0a)
 
 ## Directory Structure
 
-- `.github/`: Settings for [Dependabot for updating dependencies](https://docs.github.com/en/code-security/supply-chain-security/customizing-dependency-updates) and [build/deploy pipelines with GitHub Actions](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions).
+- `.github/`: Settings for [Dependabot for updating dependencies](https://docs.github.com/en/code-security/supply-chain-security/customizing-dependency-updates) and [build/deploy pipelines with GitHub Actions](https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions).

package.json

@@ -0,0 +1,13 @@
+{
+  "name": "coder-v2",
+  "description": "Coder V2 (Workspaces V2)",
+  "repository": "https://github.com/coder/coder",
+  "private": true,
+  "scripts": {
+    "format:check": "prettier --check '**/*.{css,html,js,json,jsx,md,ts,tsx,yaml,yml}'",
+    "format:write": "prettier --write '**/*.{css,htmljs,json,jsx,md,ts,tsx,yaml,yml}'"
+  },
+  "devDependencies": {
+    "prettier": "2.5.1"
+  }
+}

yarn.lock

@@ -0,0 +1,8 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+prettier@^2.5.1:
+  version "2.5.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-2.5.1.tgz#fff75fa9d519c54cf0fce328c1017d94546bc56a"
+  integrity sha512-vBZcPRUR5MZJwoyi3ZoyQlc1rXeEck8KgeC9AwwOn+exuxLxq5toTRDTSaVrXHxelDMHy9zlicw8u66yxoSUFg==