Update Dockerfile

Dockerfile

@@ -60,10 +60,11 @@ RUN --mount=type=secret,id=GH_TOKEN,mode=0444,required=true \
     git config --global user.email $(cat /run/secrets/GH_EMAIL) && \
     git clone https://$(cat /run/secrets/GH_TOKEN)@github.com/$(cat /run/secrets/GH_USERNAME)/$(cat /run/secrets/REPO_NAME).git /home/coder/cpp_competition
 
+RUN echo "cron && code-server /home/coder/cpp_competition" > /home/coder/start.sh
 
 # 暴露端口
 EXPOSE 8080
 EXPOSE 7860
 
 # 将启动脚本设为容器入口
-CMD ["cron", "&&", "code-server", "/home/coder/cpp_competition"]
+CMD ["/home/coder/start.sh"]