Docs preview is only available for pull requests from the orignal rep…

…o, not forks (#2943)

See also #2941

Signed-off-by: Tao He <linzhu.ht@alibaba-inc.com>

.github/workflows/docs.yml

@@ -26,8 +26,8 @@ jobs:
     - name: Checkout Code
       uses: actions/checkout@v3
       with:
-        repository: ${{github.event.pull_request.head.repo.full_name}}
-        ref: ${{github.event.pull_request.head.ref}}
+        repository: ${{ github.event.pull_request.head.repo.full_name }}
+        ref: ${{ github.event.pull_request.head.ref }}
         submodules: true
         fetch-depth: 0
 
@@ -54,7 +54,7 @@ jobs:
         touch ${GITHUB_WORKSPACE}/preview-the-docs.mark
 
     - name: Leave the comment on pull request when started
-      if: ${{ steps.changes.outputs.src == 'true' && github.event_name == 'pull_request' }}
+      if: ${{ steps.changes.outputs.src == 'true' && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == 'alibaba/GraphScope' }}
       uses: actions-cool/maintain-one-comment@v3
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
@@ -171,15 +171,15 @@ jobs:
         fi
 
     - name: Preview using surge
-      if: ${{ steps.changes.outputs.src == 'true' && github.event_name == 'pull_request' }}
+      if: ${{ steps.changes.outputs.src == 'true' && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == 'alibaba/GraphScope' }}
       run: |
         npm install -g surge
         surge ./docs/_build/latest/html \
               alibaba-graphscope-build-pr-${{ github.event.number }}.surge.sh \
               --token ${{ secrets.SURGE_TOKEN }}
 
     - name: Leave the comment on pull request when succeed
-      if: ${{ steps.changes.outputs.src == 'true' && github.event_name == 'pull_request' }}
+      if: ${{ steps.changes.outputs.src == 'true' && github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name == 'alibaba/GraphScope' }}
       uses: actions-cool/maintain-one-comment@v3
       with:
         token: ${{ secrets.GITHUB_TOKEN }}
@@ -201,7 +201,7 @@ jobs:
         files: "preview-the-docs.mark"
 
     - name: Leave the comment on pull request when failed
-      if: ${{ failure() && steps.check_files.outputs.files_exists == 'true' }}
+      if: ${{ failure() && steps.check_files.outputs.files_exists == 'true' && github.event.pull_request.head.repo.full_name == 'alibaba/GraphScope' }}
       uses: actions-cool/maintain-one-comment@v3
       with:
         token: ${{ secrets.GITHUB_TOKEN }}