ci updates

Author: smrz2001

.github/workflows/deploy-docs.yml .github/workflows/build-deploy-docs.yml.github/workflows/deploy-docs.yml renamed to .github/workflows/build-deploy-docs.yml

@@ -1,13 +1,17 @@
-name: Deploy docs
+name: Build and deploy docs
+
 on:
+  pull_request:
+    branches:
+      - main
   push:
     branches:
       - main
   workflow_dispatch: # manually triggered
 
 jobs:
-  deploy:
-    name: Deploy docs to GitHub Pages
+  build:
+    name: Build docs website
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
@@ -30,6 +34,7 @@ jobs:
         run: pnpm build
 
       - name: Deploy to GitHub Pages
+        if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}