ci: require successful build before deployment

Author: Alfagun74

.github/workflows/deploy.yml

@@ -4,14 +4,18 @@ on:
   push:
     branches:
       - master
+      - develop
+  pull_request:
+    branches:
+      - master
 
 concurrency:
-  group: deploy-docs
+  group: deploy-docs-${{ github.ref }}
   cancel-in-progress: true
 
 jobs:
-  deploy:
-    name: Deploy to GitHub Pages
+  build:
+    name: Build site
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
@@ -31,6 +35,25 @@ jobs:
       - name: Build website
         run: pnpm run build
 
+      - name: Upload build artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: site-build
+          path: ./build
+          retention-days: 1
+
+  deploy:
+    name: Deploy to GitHub Pages
+    needs: build
+    if: github.ref == 'refs/heads/master' && github.event_name == 'push'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Download build artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: site-build
+          path: ./build
+
       - name: Deploy to GitHub Pages
         uses: peaceiris/actions-gh-pages@v4
         with: