docker容器内无法使用systemctl

问题：
在docker容器中使用systemctl命令报错

powershell [[email protected] /]# systemctl start nginx System has not been booted with systemd as init system (PID 1). Can't operate. Failed to connect to bus: Host is down   解决办法： 运行容器时添加`--privileged=true`，修改/bin/bash为/sbin/init [[email protected] ~]# docker run -itd --name nginxv2 --privileged=true centos /usr/sbin/init   验证: powershell [[email protected] ~]# docker exec -it nginxv2 /bin/bash [[email protected] /]# systemctl start nginx [[email protected] /]# ps -ef |grep nginx root         187       1  0 02:32 ?        00:00:00 nginx: master process /usr/sbin/nginx nginx        188     187  0 02:32 ?        00:00:00 nginx: worker process

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