Does the feature of Garbage Collection exist in Docker

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I've been working quite a bit with Docker these last few weeks and one thing that I found really annoying was all these unused containers and images taking up precious disk space.

I wish Docker has a command that would perhaps work like a garbage collector and remove all the unused resources( images, containers,volumes,network and other such dangling resources) Is there any way I could achieve this objective?
Jul 2, 2019 in Docker by Sam
• 6,260 points

1 answer to this question.

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Yes you can clean up resources in docker all at once.Docker takes a conservative approach to cleaning up unused objects (often referred to as “garbage collection”), such as images, containers, volumes, and networks: these objects are generally not removed unless you explicitly ask Docker to do so. This can cause Docker to use extra disk space. For each type of object, Docker provides a prune command. In addition, you can use docker system prune to clean up multiple types of objects at once. 

The docker system prune command is a shortcut that prunes images, containers, and networks. In Docker 17.06.0 and earlier, volumes are also pruned. In Docker 17.06.1 and higher, you must specify the --volumes flag for docker system prune to prune volumes.

The command is :

docker system prune [OPTIONS]
--all , -a Remove all unused images not just dangling ones
--filter API 1.28+
Provide filter values (e.g. ‘label==')
--force , -f Do not prompt for confirmation
--volumes Prune volumes

Here's  an example: 

answered Jul 2, 2019 by Sirajul
• 59,230 points

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