Cleanup disk space occupied by Docker images

拥有回忆 提交于 2021-02-17 21:17:06

问题


I am running docker on windows 10.

I had a couple of images stored in my machine. The total size of these images accumulated to around ~10GB. I have deleted these images via 'docker rmi -f' command.

But the space occupied by these images has not been released. If I run 'docker images' command, the deleted images are not listed in the output of 'docker images' command(but the disk space is not cleaned up).

How can I improve (ie. reduce) the disk space used by docker?


回答1:


First try to run:

docker system prune

It will remove:

  • all stopped containers
  • all volumes not used by at least one container
  • all networks not used by at least one container
  • all dangling images

If that's not enough, do:

docker system prune -a

It will remove:

  • all stopped containers
  • all volumes not used by at least one container
  • all networks not used by at least one container
  • all images without at least one container associated to



回答2:


Update Q4 2016: as I mention in "How to remove old and unused Docker images", use:

docker image prune -a

(more precise than docker system prune)

It will remove dangling and unused images. Warning: 'unused' means "images not referenced by any container": be careful before using -a.

Then check if the disk space for images has shrunk accordingly.


Original answer:

See the Medium article "How to clean up Docker (~5GB junk!)" from katopz.

It refers to the docker-cleanup script, for removing old exited process, and dangling images.
I have my own aliases as well.

But it also mentions that, since docker 1.10, you now have named volumes that need to be removed as well:

docker volume rm $(docker volume ls -qf dangling=true)



回答3:


To clean the system memory there are three steps:

  1. Delete docker image
  2. docker system prune -a
  3. quit the docker container app

This worked for me. Around 30gb of space was cleaned after doing the above mentioned steps.



来源:https://stackoverflow.com/questions/37518096/cleanup-disk-space-occupied-by-docker-images

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