diff --git a/.gitea/workflows/develop_build_manual.yaml b/.gitea/workflows/develop_build_manual.yaml
index eaf78a8d..2121a10f 100644
--- a/.gitea/workflows/develop_build_manual.yaml
+++ b/.gitea/workflows/develop_build_manual.yaml
@@ -77,7 +77,7 @@ jobs:
         run: |
           echo "===== 生成Dockerfile ====="
           cat > Dockerfile << 'EOF'
-          FROM openjdk:21
+          FROM openjdk:21-ea-21-jdk-slim
           VOLUME /tmp
           RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
           RUN echo 'Asia/Shanghai' > /etc/timezone