feat: Adding markdownlint v2 to GitHub Actions workflows (#4175)

* feat: Adding markdownlint v2 to GitHub Actions workflows

* feat: Adjusting workflow to use committed markdownlint rules

Author: yhakbar

.circleci/config.yml

@@ -136,14 +136,6 @@ run_terratest_log_parser: &run_terratest_log_parser
     terratest_log_parser --testlog logs/test-results.log --outputdir logs
   when: always
 
-run_markdownlint: &run_markdownlint
-  name: Run markdownlint
-  command: |
-    markdownlint \
-    --disable MD013 MD024 \
-    -- \
-    docs
-
 win_install_golang: &win_install_golang
   name: Install golang
   shell: powershell.exe
@@ -610,13 +602,6 @@ jobs:
       - store_test_results:
           path: logs
 
-  run_markdownlint:
-    <<: *defaults
-    steps:
-      - checkout
-      - run:
-          <<: *run_markdownlint
-
   build:
     resource_class: xlarge
     <<: *defaults
@@ -934,16 +919,6 @@ workflows:
             - GCP__automated-tests
             - GITHUB__PAT__gruntwork-ci
             - APPLE__OSX__code-signing
-      - run_markdownlint:
-          filters:
-            tags:
-              only:
-                - /^v.*/
-                - /^alpha.*/
-          context:
-            - AWS__PHXDEVOPS__circle-ci-test
-            - GCP__automated-tests
-            - GITHUB__PAT__gruntwork-ci
       - build:
           filters:
             tags:

.github/workflows/markdownlint.yml

@@ -0,0 +1,22 @@
+name: Markdown Lint
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  markdownlint:
+    name: Run Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Run markdownlint
+        uses: DavidAnson/markdownlint-cli2-action@v15
+        with:
+          globs: |
+            docs/**/*.md

.markdownlint-cli2.yaml

@@ -0,0 +1,6 @@
+config:
+  # Disable line length limit
+  MD013: false
+
+  # Disable multiple headers with the same content
+  MD024: false