Add lychee link checker with pre-commit

Author: jbampton

.github/linters/lychee.toml

@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+exclude = [
+    "https://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.1/html/Release_Notes/version-4.2.html#issues-fixed-4.2.1",
+    "https://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.0/html/Release_Notes/index.html",
+    "https://cloudstack.apache.org/survey.html",
+    "https://downloads.chef.io/chef-dk/",
+    "https://github.com/YOUR_ACCOUNT/cloudstack",
+    "https://iconka.com/en/downloads/cat-power/",
+    "https://issues.apache.org/.*",
+    "http://localhost:5050/",
+    "https://markmail.org/.*",
+    "https://viserjs.github.io/docs.html#/viser/guide/installation"]

.pre-commit-config.yaml

@@ -138,3 +138,12 @@ repos:
         types: [yaml]
         files: \.ya?ml$
         exclude: ^.*k8s-.*\.ya?ml$
+  - repo: https://github.com/lycheeverse/lychee.git
+    rev: lychee-v0.20.1
+    hooks:
+      - id: lychee
+        name: run lychee
+        description: run lychee a fast, async, stream-based link checker written in Rust
+        args: [--config=.github/linters/lychee.toml]
+        files: \.md$
+        stages: [manual]

PRE-COMMIT.md

@@ -20,7 +20,7 @@
 # pre-commit
 
 We run [pre-commit](https://pre-commit.com/) with
-[GitHub Actions](https://github.com/apache/cloudstack/blob/main/.github/workflows/linter.yml) so installation on your
+[GitHub Actions](https://github.com/apache/cloudstack/blob/main/.github/workflows/pre-commit.yml) so installation on your
 local machine is currently optional.
 
 The `pre-commit` [configuration file](https://github.com/apache/cloudstack/blob/main/.pre-commit-config.yaml)