DevOps/Docker/docker images

https://docs.docker.com/engine/reference/commandline/images/ $ docker images

REPOSITORY               TAG                 IMAGE ID            CREATED             SIZE 77af4d6b9913       19 hours ago        1.089 GB committ                   latest              b6fa739cedf5        19 hours ago        1.089 GB                                 78a85c484f71        19 hours ago        1.089 GB docker                    latest              30557a29d5ab        20 hours ago        1.089 GB                                 5ed6274db6ce        24 hours ago        1.089 GB postgres                  9                   746b819f315e        4 days ago          213.4 MB postgres                  9.3                 746b819f315e        4 days ago          213.4 MB postgres                  9.3.5               746b819f315e        4 days ago          213.4 MB postgres                  latest              746b819f315e        4 days ago          213.4 MB

Notes:
 * IMAGE ID column is the first 12 characters of the identifier for an image. You can create many tags of a given image, but their IDs will all be the same, as example above.


 * REPOSITORY column comes from the -t flag of the docker build command, or from docker tag-ing an existing image. You can tag images using your prefered nomenclature, but docker will use the tag as the registry location when using  or