How to remove old and unused Docker images

Question

When running Docker for a long time, there are a lot of images in system. How can I remove all unused Docker images at once safety to free up the storage?

In additio

Answer 1

Until now (Docker version 1.12) we are using the following command to delete all the running containers. Also, if we want to delete the volumes, we can do that manually using its respective tag -v in the following command.

Delete all Exited Containers

docker rm $(docker ps -q -f status=exited)

Delete all Stopped Containers

docker rm $(docker ps -a -q)

Delete All Running and Stopped Containers

docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)

Remove all containers, without any criteria

docker container rm $(docker container ps -aq)

But, in version 1.13 and above, for complete system and cleanup, we can directly user the following command:

docker system prune

All unused containers, images, networks and volumes will get deleted. We can also do this using the following commands that clean up the individual components:

docker container prune
docker image prune
docker network prune
docker volume prune