How to find docker image for a container?

Question

I am trying to find the corresponding docker image for a container.

docker inspect <container-id>

This gives a whole lot of information. It also gives the docker image if I do : docker inspect ['Config']['Image']

But this is not the reliable source as some times it just gives some SHA, something like sha256:00954e990edd7c78dff64c8031c58c07cb36b4591dca3923b5a1a1c31199e54c

Is there a reliable way to find the docker image for a container?

Especially through Python code.

I have docker client but that doesn't support any query that can give me Image name.

Are you using Docker SDK from python?

bot
– bot

2019-04-05 20:15:50 +00:00
Commented Apr 5, 2019 at 20:15 — bot
– bot, Commented Apr 5, 2019 at 20:15

mustaccio · Accepted Answer · 2019-04-05 20:16:40Z

9

docker inspect <container-id> gives you the Image property, as you've noticed:

"Image": "sha256:8d6721e9290e96cc34faeee7a525311a400598e7fee170190c73ce103dd621ce"

You can use that hash value to subsequently inspect the image itself: docker inspect <image-id>. In the example above "8d6721e9290e96cc34faeee7a525311a400598e7fee170190c73ce103dd621ce" is the image ID.

answered Apr 5, 2019 at 20:16

mustaccio

19.1k16 gold badges51 silver badges60 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Mohammed Over a year ago

aaha ... thanks. That gives me docker image under RepoTags, why it is an array ?

mustaccio Over a year ago

You can apply multiple tags to the same image, they'll be listed there.

Mohammed Over a year ago

so which one would give me the image repotag or repodigests? If there are multiple repotags how would I know which is the base image?

mustaccio Over a year ago

Not sure what you're asking; by base image do you mean the one from which your 8d6721e9 image was built?

jonathan Heindl · Accepted Answer · 2019-04-05 20:32:08Z

0

ok I jsut checked docker image inspect also works with the sha.. hash so I asume the sdk ( which probably just passes it along to cmd ) should also be able to handle it like in this example

>>> client.containers.list()
[<Container '45e6d2de7c54'>, <Container 'db18e4f20eaa'>, ...]

>>> container = client.containers.get('45e6d2de7c54')

>>> container.attrs['Config']['Image']
"bfirsh/reticulate-splines"

>>> container.logs()
"Reticulating spline 1...\n"

>>> container.stop()

edited Apr 5, 2019 at 20:32

answered Apr 5, 2019 at 20:08

jonathan Heindl

8817 silver badges21 bronze badges

Comments

TouFa7 · Accepted Answer · 2025-06-24 13:31:38Z

0

I use Config.Image it's a field of the container's inspect output plus jq to parse the JSON output :

docker inspect <container-id/name> | jq -r '.[0].Config.Image'

answered Jun 24 at 13:31

TouFa7

591 silver badge6 bronze badges

Collectives™ on Stack Overflow

How to find docker image for a container?

3 Answers 3

4 Comments

Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

4 Comments

Comments

Comments

Related