Painless Docker - 2nd Edition

Managing & Inspecting Images

A simple command to start with when it comes to Docker images is docker images, which lists all images currently stored on your local machine. The output includes columns for the repository name, tag, image ID, creation date, and size.

For example:

# Pull some images
docker pull busybox
docker pull alpine

# List them
docker images
# or
docker image ls

You can get more information about an image by using the docker image inspect command:

docker image inspect alpine

You can also print a custom output that shows the ID and size of the image:

docker images --format "{{.ID}}: {{.Size}}"

To view the repository, type:

docker images --format "{{.ID}}: {{.Repository}}"

To view all (ID, repository, tag, size):

docker images --format "{{.ID}}: {{.Repository}}:{{.Tag}} - {{.Size}}"