Backport main workflows to 2.4 branch

.github/workflows/automerge-backport.yml

@@ -0,0 +1,33 @@
+name: Automerge Backport
+on:
+  pull_request:
+  pull_request_review:
+    types:
+      - submitted
+  check_suite:
+    types:
+      - completed
+  status: {}
+jobs:
+  automerge-backport:
+    if: |
+      github.repository == 'opensearch-project/documentation-website' &&
+      startsWith(github.event.pull_request.head.ref, 'backport/')
+    runs-on: ubuntu-latest
+    steps:
+      - name: Wait some time so that label and approval is up
+        run: sleep 30
+      - id: automerge
+        name: automerge
+        uses: "pascalgn/automerge-action@v0.16.2"
+        env:
+          GITHUB_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+          MERGE_LABELS: "backport-automerge,!On hold"
+          MERGE_FILTER_AUTHOR: "opensearch-trigger-bot[bot]"
+          MERGE_REQUIRED_APPROVALS: "1"
+          MERGE_RETRIES: "20"
+          MERGE_RETRY_SLEEP: "10000"
+          MERGE_ERROR_FAIL: "true"
+          MERGE_FORKS: "false"
+          MERGE_METHOD: "squash"
+          MERGE_DELETE_BRANCH: "true"

.github/workflows/backport.yml

@@ -16,6 +16,7 @@ jobs:
     # See https://docs.github.com/en/actions/using-workflows/events-that-trigger-workflows#pull_request_target.
     if: >
       github.event.pull_request.merged
+      && github.repository == 'opensearch-project/documentation-website'
       && (
         github.event.action == 'closed'
         || (
@@ -38,3 +39,25 @@ jobs:
         with:
           github_token: ${{ steps.github_app_token.outputs.token }}
           head_template: backport/backport-<%= number %>-to-<%= base %>
+
+      - name: Label new backport PR with backport-automerge label
+        run: |
+          PR_LABELS=`echo "${{ toJson(github.event.pull_request.labels.*.name) }}" | sed -e 's/\[//g;s/\]//g;s/^\s*//g;s/\s*$//g' | tr -d '\n'`
+          echo $PR_LABELS
+          OLDIFS=$IFS
+          export IFS=','
+          for label in $PR_LABELS
+          do
+            if [[ "$label" == "backport"* ]]; then
+              echo "Found label \"$label\""
+              PR_REPO="opensearch-project/documentation-website"
+              PR_BRANCH=backport/backport-${{ github.event.pull_request.number }}-to-`echo $label | cut -d ' ' -f2`
+              PR_NUMBER=`gh pr list -R $PR_REPO --json "number,headRefName" --state open | jq -r ".[] | select(.headRefName == \"$PR_BRANCH\") | .number"`
+              echo "Update Backport PR '#$PR_NUMBER' on branch '$PR_BRANCH' with 'backport-automerge' label"
+              gh issue edit -R $PR_REPO $PR_NUMBER --add-label backport-automerge
+              echo "Auto approve $PR_REPO PR #$PR_NUMBER with opensearch-trigger-bot"
+              gh pr review -R $PR_REPO $PR_NUMBER --approve
+            fi
+          done
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/delete_merged_branch.yml

@@ -0,0 +1,22 @@
+name: Delete merged branch of the PRs
+on:
+  pull_request:
+    types:
+      - closed
+
+jobs:
+  delete-branch:
+    runs-on: ubuntu-latest
+    if: |
+      github.repository == 'opensearch-project/documentation-website' &&
+      ${{ !startsWith(github.event.pull_request.head.ref, 'main') }} &&
+      ${{ !startsWith(github.event.pull_request.head.ref, '1.') }} &&
+      ${{ !startsWith(github.event.pull_request.head.ref, '2.') }} &&
+      ${{ !startsWith(github.event.pull_request.head.ref, 'version/') }}
+    steps:
+      - name: Echo remove branch
+        run: echo Removing ${{github.event.pull_request.head.ref}}
+      - name: Delete merged branch
+        uses: SvanBoxel/delete-merged-branch@main
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/encoding-check.yml

@@ -0,0 +1,27 @@
+name: Encoding Checker
+
+on: [pull_request]
+
+jobs:
+  encoding-checker:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+    - name: Check for possible file that does not follow utf-8 encoding
+      run: |
+          set +e
+          IFS=$(echo -en "\n\b")
+          COUNTER=0
+          for i in `find . -type f \( -name "*.txt" -o -name "*.md" -o -name "*.markdown" -o -name "*.html" \) | grep -vE "^./.git"`;
+          do
+              grep -axv '.*' "$i"
+              if [ "$?" -eq 0 ]; then
+                  echo -e "######################\n$i\n######################"
+                  COUNTER=$(( COUNTER + 1 ))
+              fi
+          done
+          if [ "$COUNTER" != 0 ]; then
+              echo "Found files that is not following utf-8 encoding, exit 1"
+              exit 1
+          fi

.github/workflows/jekyll-build.yml

@@ -3,7 +3,7 @@ name: Jekyll Build Verification
 on: [pull_request]
 
 jobs:
-  check:
+  jekyll-build:
     runs-on: ubuntu-latest
 
     steps:

.github/workflows/link-checker.yml

@@ -4,8 +4,8 @@ on:
   schedule:
     - cron: "30 11 * * 0"
 jobs:
-  check:
-    if: github.repository == ‘opensearch-project/documentation-website’
+  link-checker:
+    if: github.repository == 'opensearch-project/documentation-website'
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3