feat: add helm-docs check

.github/ISSUE_TEMPLATE/config.yml

@@ -2,4 +2,4 @@ blank_issues_enabled: false
 contact_links:
   - name: Chat on Slack
     url: https://kubernetes.slack.com/archives/C03GETTJQRL
-    about: Maybe chatting with the community can help
+    about: Maybe chatting with the community can help

.github/configs/ct.yaml

@@ -7,4 +7,4 @@ validate-chart-schema: false
 validate-maintainers: false
 validate-yaml: true
 exclude-deprecated: true
-check-version-increment: false
+check-version-increment: false

.github/configs/lintconf.yaml

@@ -40,4 +40,4 @@ rules:
     type: unix
   trailing-spaces: enable
   truthy:
-    level: warning
+    level: warning

.github/workflows/helm.yml

@@ -31,6 +31,17 @@ jobs:
           fi
       - name: Run chart-testing (lint)
         run: ct lint --debug --config ./.github/configs/ct.yaml --lint-conf ./.github/configs/lintconf.yaml
+      - name: Run docs-testing (helm-docs)
+        id: helm-docs
+        run: |
+          make helm-docs
+          if [[ $(git diff --stat) != '' ]]; then
+            echo -e '\033[0;31mDocumentation outdated! (Run make helm-docs locally and commit)\033[0m ❌'
+            git diff --color
+            exit 1
+          else
+            echo -e '\033[0;32mDocumentation up to date\033[0m ✔'
+          fi
       # Create KIND Cluster
       - name: Create kind cluster
         uses: helm/kind-action@v1.2.0