Failed to get D-Bus connection: Operation not permitted

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docker run --privileged  -ti -e "container=docker"  -v /sys/fs/cgroup:/sys/fs/cgroup  trinitronx/ansible-base:stable-centos7  /usr/sbin/init
For some undocumented reason the variable container=docker is apparently required. /sys/fs/cgroup is also required, as SystemD needs cgroups to work properly according to RedHat Bug 1033604.
* systemctl status nginx
Failed to get D-Bus connection: Operation not permitted