Provide prunecommands to remove unused images, containers, volumes, and networks.
Prune images
docker image pruneRemove images that have no tags and are not referenced by the container. Such images are called dangling images.
Example 1:docker image prune
Removed redis, no tags and no references
#docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest ae2feff98a0c 4 days ago 133MB
redis <none> ef47f3b6dc11 8 days ago 104MB
centos latest 300e315adb2f 12 days ago 209MB
ubuntu latest f643c72bc252 3 weeks ago 72.9MB
docs/docker.github.io latest 32ed84d97e30 6 months ago 1GB
# docker image prune
# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
nginx latest ae2feff98a0c 4 days ago 133MB
centos latest 300e315adb2f 12 days ago 209MB
ubuntu latest f643c72bc252 3 weeks ago 72.9MB
docs/docker.github.io latest 32ed84d97e30 6 months ago 1GB
Example 2: Remove all images that are not used by the container -a
docker image prune -a
Skip the warning prompt: --forceor-f
docker image prune -f
- 1
Example 3: Perform filter deletion:
Mirror created more than 24 hours
docker image prune -a --filter "until=24h"
For the content of the filter, see the docker image prune manual
Remove container s
When the container is stopped, it will not be deleted automatically unless it is specified in docker run --rm. A stopped container writable layer will still take up disk space, so to clear it, use the docker container prunecommand.
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Other parameters are similar
docker images prune
Remove volume
The volume will be used by one or more containers and occupy host space. The volume will not be automatically removed, because automatic removal will destroy the data.
docker volume prune
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Other parameters are similar
docker images prune
Remove network
Docker network does not take up disk space, but they create iptablesrules, bridge network services, and route entries. Clear the network that is not used by the container, do so
docker network prune
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Other parameters are similar
docker images prune
Remove Everything
docker system prune The command is a shortcut to remove images, containers, and networks.
In Docker 17.06.0 and earlier, volumes can also be removed. In Docker 17.06.1 or later, you need to specify parameters --volumes.
Example (without removing the volume):
# docker system prune
WARNING! This will remove:
- all stopped containers
- all networks not used by at least one container
- all dangling images
- all build cache
Are you sure you want to continue? [y/N] y
Example (with remove volume function): add--volumes
# docker system prune --volumes
WARNING! This will remove:
- all stopped containers
- all networks not used by at least one container
- all volumes not used by at least one container
- all dangling images
- all build cache
Are you sure you want to continue? [y/N] y
…
Other parameters are similar
docker images prune
PS
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