Listing docker images with associated containers

Question

Using docker image prune we can remove dangling or unused images.

So, I'm wondering if there is a way to list all images used by at least one container, also listing - for each image - the containers that are using them.

Is there some out-of-the-box command in Docker or should I write a script to achieve this?

Paolo · Accepted Answer · 2020-09-22 07:58:06Z

2

You can filter the output of docker ps:

docker ps -a | awk '{print "Image "$2" used by container "$1"" }'

this will print the name of the base image and the name of the container for all containers on your machine.

edited Sep 22, 2020 at 7:58

answered Sep 22, 2020 at 7:50

Paolo

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2 Comments

ejkitchen Over a year ago

Just a quick edit. Should be docker ps -a | tail -n +2 | awk '{print "Image "$2" used by container "$1"" }'

ejkitchen Over a year ago

You can also do docker ps -a --format "{{.Image}} {{.Names}} {{.ID}}" | awk '{print "Image "$2" used by container "$1"" }'

davioooh · Accepted Answer · 2020-09-22 08:42:05Z

Elaborating the answer suggested by Paolo, I created this script which matches pretty fine what I had in my mind:

docker ps -a --format "{{.Image}} {{.Names}} {{.ID}}" | sort | awk '{print "Image "$1" used by container "$2" ("$3")" }'

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