我有一个C++程序在Docker容器中运行。我想通过我的程序重新启动容器，但我不能。
停靠文件：

FROM gcc

WORKDIR /client
COPY . .

RUN apt-get update && apt-get install qt5-qmake qtbase5-dev libmosquitto-dev -y

RUN qmake mainapp.pro && make
RUN chmod +x docker-entrypoint.sh

docker-entrypoint.sh

#!/bin/bash
./mainapp -e

下面是我的重新启动功能（清除了不必要的代码）：

Logger::getInstance()->write(QString("Sync"));
    sync();
    Logger::getInstance()->write(QString("Setuid"));
    setuid(0);
    Logger::getInstance()->write(QString("RB_AUTOBOOT"));
    reboot(RB_AUTOBOOT);
    Logger::getInstance()->write(QString("Reboot"));
    system("reboot");

我可以看到所有的输出，然后它打印一个错误消息。下面是错误消息：

System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
Failed to talk to init daemon.

我尝试从容器重新启动，但效果不佳：

root@93501f6d7fc8:/client# reboot
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
Failed to talk to init daemon.
root@93501f6d7fc8:/client# shutdown -r
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down

我已经搜索了这个问题，并尝试了大多数建议，但他们没有解决我的问题。
我愿意听取你的意见和建议。