diff --git a/.gitea/workflows/docker.yml b/.gitea/workflows/docker.yml
index a363dd1..8c6f876 100644
--- a/.gitea/workflows/docker.yml
+++ b/.gitea/workflows/docker.yml
@@ -11,6 +11,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v4  # 这行不能少！
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
         with: