bin/ctr c create -t --rootfs /opt/runctest/redis/rootfs redis /usr/local/bin/redis-server /etc/redis.conf

bin/ctr t start -h
NAME:
   ctr tasks start - start a container that have been created

USAGE:
   ctr tasks start [command options] CONTAINER

OPTIONS:
   --null-io         send all IO to /dev/null
   --fifo-dir value  directory used for storing IO FIFOs
   --pid-file value  file path to write the task's pid

bin/ctr t start -h
NAME:
   ctr tasks start - start a container that have been created

USAGE:
   ctr tasks start [command options] CONTAINER

OPTIONS:
   --null-io         send all IO to /dev/null
   --fifo-dir value  directory used for storing IO FIFOs
   --pid-file value  file path to write the task's pid
   --detach, -d      detach from the task after it has started execution

bin/ctr t start -d redis
1:C 27 Aug 10:48:30.661 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
...........................
bin/ctr t ls
TASK     PID      STATUS    
redis    32604    RUNNING