use nginx for docker image

.github/workflows/ci.yml

@@ -43,6 +43,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+      - uses: christopherhx/gitea-download-artifact@v4
+        with:
+          name: build
       - name: Log in to Docker Registry
         uses: docker/login-action@v2
         with: