RHEL7 - Error installing docker compose

Hi,

Sorry for the newbie question... I have just installed the docker-engine in my RHEL7 box but Im having issues to install the docker-compose...

[root@-v4 ~]# cd compose
[root@-v4 compose]# ls
docker-compose-Linux-x86_64  run.sh
[root@-v4 compose]#
[root@-v4 compose]# ./run.sh
Error response from daemon: open /var/lib/docker/repositories-devicemapper: no such file or directory

The dir. is empty:
[root@-v4 compose]# cd /var/lib/docker/
[root@-v4 docker]# ls
lost+found
[root@-v4 docker]#


Is it suppose to be like this? I have started the service...

[root@-v4 /]# service docker start
Redirecting to /bin/systemctl start  docker.service

[root@-v4 docker]# docker version
Client:
 Version:      1.9.1
 API version:  1.21
 Go version:   go1.4.2
 Git commit:   a34a1d5
 Built:        Fri Nov 20 13:25:01 UTC 2015
 OS/Arch:      linux/amd64

Server:
 Version:      1.9.1
 API version:  1.21
 Go version:   go1.4.2
 Git commit:   a34a1d5
 Built:        Fri Nov 20 13:25:01 UTC 2015
 OS/Arch:      linux/amd64

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Any assistance is appreciated..

Tks,
Joao