Add GHEC link check workflow (#22478)

* Add GHEC link checker workflow

* Update link check script for GHEC

* Remove stale comments

.github/workflows/link-check-ghec.yml

@@ -0,0 +1,36 @@
+name: 'Link Checker: Enterprise Cloud'
+
+# **What it does**: This checks links for GHEC version of docs.
+# **Why we have it**: We want to know if links break.
+# **Who does it impact**: Docs content.
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ${{ fromJSON('["ubuntu-latest", "self-hosted"]')[github.repository == 'github/docs-internal'] }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@1e204e9a9253d643386038d443f96446fa156a97
+
+      - name: Setup node
+        uses: actions/setup-node@270253e841af726300e85d718a5f606959b2903c
+        with:
+          node-version: 16.8.x
+          cache: npm
+
+      - name: Install
+        run: npm ci
+
+      - name: Build
+        run: npm run build
+
+      - name: 'Link check: Enterprise Cloud'
+        env:
+          DOCS_VERSION: 'enterprise-cloud'
+        run: npm run link-check

script/check-internal-links.js

@@ -16,7 +16,7 @@ import { deprecated, latest } from '../lib/enterprise-server-releases.js'
 
 const checker = new linkinator.LinkChecker()
 const englishRoot = 'http://localhost:4002/en'
-const allowedVersions = ['dotcom', 'enterprise-server', 'github-ae']
+const allowedVersions = ['dotcom', 'enterprise-cloud', 'enterprise-server', 'github-ae']
 
 const config = {
   path: englishRoot,
@@ -40,12 +40,17 @@ const config = {
 
 // Customize config for specific versions
 if (process.env.DOCS_VERSION === 'dotcom') {
-  // If Dotcom, skip Enterprise Server and GitHub AE links
+  // If Dotcom, skip Enterprise Cloud, Enterprise Server, and GitHub AE links
   config.linksToSkip.push(
+    '^.*/enterprise-cloud@latest.*$',
     '^.*/enterprise-server@.*$',
     '^.*/enterprise/.*$',
     '^.*/github-ae@latest.*$'
   )
+} else if (process.env.DOCS_VERSION === 'enterprise-cloud') {
+  // If Enterprise Cloud, skip links that are not Enterprise Cloud links
+  config.path = `${englishRoot}/enterprise-cloud@latest`
+  config.linksToSkip.push('^((?!enterprise-cloud@latest).)*$')
 } else if (process.env.DOCS_VERSION === 'enterprise-server') {
   // If Enterprise Server, skip links that are not Enterprise Server links
   config.path = `${englishRoot}/enterprise-server@${latest}`