diff --git a/group-buying-sys-app/Dockerfile b/group-buying-sys-app/Dockerfile
index 4fcb47b..fbea533 100644
--- a/group-buying-sys-app/Dockerfile
+++ b/group-buying-sys-app/Dockerfile
@@ -27,22 +27,19 @@ RUN mvn \
     -DskipTests -B
 
 # —— 第二阶段：运行时镜像 ——
-FROM openjdk:8-jre-slim
+FROM openjdk:17-jdk-slim
 LABEL maintainer="smile"
 
 # 可选：设置时区
-ENV TZ=PRC
-RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
- && echo $TZ > /etc/timezone
+ENV TZ=Asia/Shanghai
+RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
 # 把构建产物拷过来
 COPY --from=builder \
      /workspace/group-buying-sys-app/target/group-buying-sys-app-*.jar \
-     /app.jar
+     app.jar
 
 # 暴露端口，按需改
 EXPOSE 8091
 
-# 启动命令，可通过 -e JAVA_OPTS / -e PARAMS 传参数
-ENV PARAMS=""
-ENTRYPOINT ["sh","-c","java $JAVA_OPTS -jar /app.jar $PARAMS"]
+ENTRYPOINT ["java", "-jar", "app.jar"]