[CI] Update CI

.github/workflows/charts-auto-generate-docs.yaml

@@ -103,15 +103,69 @@ jobs:
   generate-readme-fork:
     if:
       github.event_name == 'repository_dispatch'
-#       github.event_name == 'repository_dispatch' &&
-#       github.event.client_payload.slash_command.sha != '' &&
-#       contains(github.event.client_payload.pull_request.head.sha, github.event.client_payload.slash_command.sha)
     name: Auto-generate chart README
     runs-on: ubuntu-20.04
     steps:
-    # # Check out merge commit
-    # - name: Fork based /ok-to-test checkout
-    #   uses: actions/checkout@v2
-    #   with:
-    #     ref: 'refs/pull/${{ github.event.client_payload.pull_request.number }}/merge'
-    - uses: hmarr/debug-action@v2
+    # Check out merge commit
+    - name: Fork based /ok-to-test checkout
+      uses: actions/checkout@v2
+      with:
+        ref: 'refs/pull/${{ github.event.client_payload.pull_request.number }}/merge'
+        
+    - uses: dorny/paths-filter@v2
+      id: filter
+      with:
+        list-files: shell
+        filters: |
+          addedOrModified:
+            - added|modified: 'charts/**'
+
+    - name: Install Helm
+      if: steps.filter.outputs.addedOrModified == 'true'
+      uses: azure/setup-helm@v1
+      with:
+        version: v3.5.3
+
+    - uses: actions/setup-python@v2
+      if: steps.filter.outputs.addedOrModified == 'true'
+      with:
+        python-version: 3.7
+
+    - name: Install helm-docs
+      if: steps.filter.outputs.addedOrModified == 'true'
+      run: |
+        wget -O /tmp/helm-docs.deb  https://github.com/norwoodj/helm-docs/releases/download/v1.5.0/helm-docs_1.5.0_linux_amd64.deb
+        sudo dpkg -i /tmp/helm-docs.deb
+
+    - name: Run against changed charts
+      if: steps.filter.outputs.addedOrModified == 'true'
+      run: |
+        CHARTS=()
+        PATHS=(${{ steps.filter.outputs.addedOrModified_files }})
+        # Get only the chart paths
+        for i in "${PATHS[@]}"
+        do
+            IFS='/' read -r -a path_parts <<< "$i"
+            CHARTS+=("${path_parts[1]}/${path_parts[2]}")
+        done
+
+        # Remove duplicates
+        CHARTS=( `for i in ${CHARTS[@]}; do echo $i; done | sort -u` )
+
+        for i in "${CHARTS[@]}"
+        do
+            echo "Rendering README for chart ${i}"
+            IFS='/' read -r -a chart_parts <<< "$i"
+            ./hack/gen-helm-docs.sh "${chart_parts[0]}" "${chart_parts[1]}"
+            echo ""
+        done
+
+    - name: Create commit
+      if: steps.filter.outputs.addedOrModified == 'true'
+      uses: stefanzweifel/git-auto-commit-action@v4
+      with:
+        commit_message: Auto-generate chart README
+        commit_user_name: k8s-at-home[bot]
+        commit_user_email: <k8s-at-home[bot]@users.noreply.github.com>
+        commit_author: k8s-at-home[bot] <k8s-at-home[bot]@users.noreply.github.com>
+        file_pattern: charts/**/