Failed to connect to bus: No such file or directoryin ubuntu docker Container

General
1

I need to change my nginx Configuration path like
/etc/nginx/nginx.conf to /opt/nginx_agent/conf/nginx.conf

so i follow this link http://serverfault.com/questions/821284/how-can-i-change-nginx-configuration-file-path to Configure this, But, While Reload the Daemon Process

     **systemctl daemon-reload**

its throw Failed to connect to bus: No such file or directory so, follow this link they suggest Since systemd isn't running as init inside your container, there's no daemon to process your start and stop commands.

So, I need to Change nginx Configuration path, suggest me How to do that without reload systemctl.