fix: prevent nginx default page in hugo image

.gitea/workflows/deploy.yml

@@ -25,6 +25,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Setup Hugo
         run: |
@@ -63,7 +65,16 @@ jobs:
           hugo version
 
       - name: Hugo Build
-        run: hugo --minify
+        run: |
+          set -euo pipefail
+          rm -rf public
+          hugo --minify
+          test -s public/index.html
+          if grep -q "Welcome to nginx" public/index.html; then
+            echo "public/index.html is nginx default page, aborting" >&2
+            exit 1
+          fi
+          grep -q "洛尘的技术笔记" public/index.html
 
       - name: Build and Push Docker Image
         env: