Delete docker specific images

Question

I need some kind of Docker behaviour. Imagine docker image name is imagename and image also have tag(1, 2, 3 ...). Now I want to delete all images with the name imagename and with the tag that isn't x. For example if I have images:

imagename:1
imagename:2
imagename:3
imagename:4
imagename:5
imagename:6

with 1, 2, 3 ...6 tags, and I want to have only one Image with name imagename and tag 6, what command should I run?

What have you already tried? Is there a specific tool set you're thinking of (the Python Docker API; `grep` and `xargs`; ...)? — David Maze, May 19 '19 at 16:38

hek2mgl · Accepted Answer · 2019-05-19T16:52:21.860

1

I don't think it's possible with the docker command alone. I would use a small shell loop. For example remove every python image which is not tagged 3.6:

docker images | awk -v img='python' -v tag='3.6' '$1==img && $2!=tag{print $3}' \
  | while read -r id ; do docker rmi "${id}" ; done

edited May 19 '19 at 16:52

answered May 19 '19 at 16:41

hek2mgl

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what is $2 and $3? I know they are passed as arguments when running the bash script, but what do they mean? $2 might be tag but what about $3? – Nika Kurashvili May 19 '19 at 16:48
Those variables aren't bash variables, they are `awk` variables. Their refer to the columns in the input of `awk` (which is the output of `docker images`) – hek2mgl May 19 '19 at 16:50
somehow it deletes all images with name python – O. Shekriladze May 19 '19 at 16:54
turns out some of them have same IDs – O. Shekriladze May 19 '19 at 16:59
(1) It won't delete python:3.6 images. (2) If they have the same id, then you tagged the same image with different names – hek2mgl May 19 '19 at 17:03

Delete docker specific images

1 Answers1