< DevOps < Docker

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

$ docker images

REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE
<none>                    <none>              77af4d6b9913        19 hours ago        1.089 GB
committ                   latest              b6fa739cedf5        19 hours ago        1.089 GB
<none>                    <none>              78a85c484f71        19 hours ago        1.089 GB
docker                    latest              30557a29d5ab        20 hours ago        1.089 GB
<none>                    <none>              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 (docker tag[1]), 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 docker push or docker pull

See also

  1. ↑ https://docs.docker.com/engine/reference/commandline/tag/
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