Automatically remove 'unused' images from Portainer

d13m · 24. Februar 2020

Hi, guys!
Is it possible to automatically remove 'unused' images from Portainer?
Previously I used OMV4 and there was very easy way for clean up 'old' images, just one command in scheduler if I`m not mistaken. But in OMV5 I don`t see any options except manual.

I have container with watchtower which update my dockers when they have new version and very often I can see these pictures, sometimes I don`t have time for checking them every day and by the end of the week I can get till 5Gb storage space which was taken by unused images.

gderf · 24. Februar 2020

You can still use a scheduled job to do this.

I run this daily at midnight:

Code

docker images -q --filter "dangling=true" | xargs -n1 -r docker rmi

Try it in the shell first to see that it works.

d13m · 24. Februar 2020

Thanks a lot! It helped, but this command removed even more than I expected
Didn`t get what does this command do - " xargs -n1 -r docker rmi"

I had only 1 'unused' image for today, but after run it from terminal I see even 4 removed items:

Bash

root@Server:~# docker images -q --filter "dangling=true" | xargs -n1 -r docker rmi
Untagged: plexinc/pms-docker@sha256:e44b21dad945da8c8559352be0dbf829076798d0a4c84a5b2be15e0c29defe0e
Deleted: sha256:f7e500371bed7cfa1627d892571eddd2c77c83c0edca2f53a41c4ec893a56887
Deleted: sha256:8846b65447b959e3315caf6fd377735f2f452370649511483b2a3218ffc8cebd
Deleted: sha256:658d69541077d587f13a911e23eced3d5591d1905758c42998bdc877e960284d
Deleted: sha256:05fcfe2cdfa83bfe4bb1a3df91cccc26b66f6c6c0b3d5ab3d70d2d32cbc2d565

I hope that`s fine, because nothing broken. And for future I`m going to create usual job

Probably, also could be used next command:

Found here http://queirozf.com/entries/do…aning-up-unused-resources

Bash

docker rmi $(docker images --quiet --filter "dangling=true")

gderf · 24. Februar 2020

Don't worry about what you saw, I see similar all the time. From today's run here:

Untagged: linuxserver/jackett@sha256:bc673819ddade6716b7f46241d27ba69895d94eee5d8ecae1d61adb188a363e5Deleted: sha256:0b7c5d34ea96b577f271d33c10b2812f5dbeddba19ffc65cb62805d69983c8a5Deleted: sha256:08014f12fb51399a9fb221e336a0e74e9f91e80dd56a8f6e974b32c604bb9802Deleted: sha256:71cd0bbea496c9416c10f7d5d8b1d20e7366664a98e22b60bf3f169627441537

d13m · 24. Februar 2020

BTW: decided to add one more command in scheduler for clean up unused volumes, found that I have one unused, already checked it, works:

Bash

docker volume rm $(docker volume ls -f dangling=true -q)

Pr0xiMUS · 19. Mai 2021

Using OMV5 and I just did this:

- create new daily scheduled job from OMV GUI

- run command: docker image prune --force

raulfg3 · 19. Mai 2021

my recomendation to use in scheduled jobs: [HOWTO] free / prune space used by dockers

Nabukodonosor · 1. Januar 2022

Hey guys. I have several unused volumes, but I'm kinda affraid to delete them How can I find out which containers used them?

gderf · 2. Januar 2022

I wouldn't worry about it. If they are unused deleting them will not matter.

raulfg3 · 2. Januar 2022

Zitat von Nabukodonosor

Hey guys. I have several unused volumes, but I'm kinda affraid to delete them How can I find out which containers used them?

filter by unused and delete using "delete" button, is safe.

Automatically remove 'unused' images from Portainer

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