docker ps

Example output:

[root@docker ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
e74a951620df        centos              "/bin/bash"         27 minutes ago      Up 27 minutes                           reverent_hoover     
c4e618ab9128        centos              "/bin/bash"         28 minutes ago      Up 28 minutes                           elated_pike         

There are pre-configured docker containers, you are able to search for them using the search command:

docker search OS

Example output

[root@docker ~]# docker search centos7
NAME                                            DESCRIPTION                                     STARS     OFFICIAL   AUTOMATED
ansible/centos7-ansible                         Ansible on Centos7                              57                   [OK]
milcom/centos7-systemd                                                                          5                    [OK]
gonzalomarcote/docker-cert-asterisk13-centos7   Docker image with Certified Asterisk 13 LT...   3                    [OK]
toprightgroup/narwhal-centos7                   Docker base image with CentOS 7                 2                    [OK]
cmer81/centos7-openstack                        Centos7 image for openstack-cloudinit           2                    [OK]
tukiyo3/centos7-ja-systemd                      from centos:centos7                             1                    [OK]
opencpu/centos7                                 Development build of OpenCPU based on Cent...   0                    [OK]
kriation/centos7                                A base CentOS v7 image derived from centos...   0                    [OK]
finalduty/centos7                                                                               0                    [OK]
appelgriebsch/centos7                           CentOS 7 with EPEL repo and latest securit...   0                    [OK]

docker rename –help

Usage: docker rename [OPTIONS] OLD_NAME NEW_NAME

docker rename CentOS6 WebApplication