How do I get a docker image?

petulia3478

Images are automatically pulled when you install a container, you can specially use the docker pull command to get the image you require as well.

The terminology used to get a docker image is called "pull". So to pull a docker image run:

$ docker pull centos
latest: Pulling from centos
47d44cb6f252: Pull complete
168a69b62202: Pull complete
812e9d9d677f: Pull complete
4234bfdd88f8: Pull complete
ce20c473cd8a: Pull complete
centos:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
Digest:

Display docker images (truncated output)

$ docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
centos              latest              ce20c473cd8a        2 weeks ago         172.3 MB
ubuntu/sinatra      v2                  45ce00c5c6df        4 months ago        318 MB
ubuntu              14.04               fa81ed084842        4 months ago        188.3 MB

The -a option to docker images will show intermediate images as well.