@VonC已经给出了一个非常好的答案，但为了完整起见，这里有一个我一直在使用的小脚本——如果你有一些差事，它也会破坏任何Docker进程:

#!/bin/bash

imgs=$(docker images | awk '/<none>/ { print $3 }')
if [ "${imgs}" != "" ]; then
   echo docker rmi ${imgs}
   docker rmi ${imgs}
else
   echo "No images to remove"
fi

procs=$(docker ps -a -q --no-trunc)
if [ "${procs}" != "" ]; then
   echo docker rm ${procs}
   docker rm ${procs}
else
   echo "No processes to purge"
fi

下面是一个清理Docker映像并回收空间的脚本。

#!/bin/bash -x
## Removing stopped container
docker ps -a | grep Exited | awk '{print $1}' | xargs docker rm

## If you do not want to remove all container you can have filter for days and weeks old like below
#docker ps -a | grep Exited | grep "days ago" | awk '{print $1}' | xargs docker rm
#docker ps -a | grep Exited | grep "weeks ago" | awk '{print $1}' | xargs docker rm

## Removing Dangling images
## There are the layers images which are being created during building a Docker image. This is a great way to recover the spaces used by old and unused layers.

docker rmi $(docker images -f "dangling=true" -q)

## Removing images of perticular pattern For example
## Here I am removing images which has a SNAPSHOT with it.

docker rmi $(docker images | grep SNAPSHOT | awk '{print $3}')

## Removing weeks old images

docker images | grep "weeks ago" | awk '{print $3}' | xargs docker rmi

## Similarly you can remove days, months old images too.

原始的脚本

https://github.com/vishalvsh1/docker-image-cleanup

通常Docker将所有与图像构建和图层相关的临时文件保存在

/var/lib/docker

该路径是系统的本地路径，通常位于根分区“/”。

您可以挂载一个更大的磁盘空间，并将/var/lib/docker的内容移动到新的挂载位置，并进行符号链接。

这样，即使Docker映像占用空间，也不会影响您的系统，因为它将使用其他一些挂载位置。

原文章:管理本地磁盘上的Docker映像

要删除没有容器运行的标记图像，你必须使用一个小脚本:

#!/bin/bash

# remove not running containers
docker rm $(docker ps -f "status=exited" -q)

declare -A used_images

# collect images which has running container
for image in $(docker ps | awk 'NR>1 {print $2;}'); do
    id=$(docker inspect --format="{{.Id}}" $image);
    used_images[$id]=$image;
done

# loop over images, delete those without a container
for id in $(docker images --no-trunc -q); do
    if [ -z ${used_images[$id]} ]; then
        echo "images is NOT in use: $id"
        docker rmi $id
    else
        echo "images is in use:     ${used_images[$id]}"
    fi
done

要修剪所有的图像和卷以及 Docker系统剪枝-af——volumes

我正在使用这个命令:

export BEFORE_DATETIME=$(date --date='10 weeks ago' +"%Y-%m-%dT%H:%M:%S.%NZ")
docker images -q | while read IMAGE_ID; do
    export IMAGE_CTIME=$(docker inspect --format='{{.Created}}' --type=image ${IMAGE_ID})
    if [[ "${BEFORE_DATETIME}" > "${IMAGE_CTIME}" ]]; then
        echo "Removing ${IMAGE_ID}, ${BEFORE_DATETIME} is earlier then ${IMAGE_CTIME}"
        docker rmi -f ${IMAGE_ID};
    fi;
done

这将删除创建时间大于10周的所有映像。

我通常做docker rm -f $(docker ps -a -q)和docker系统修剪清除所有悬挂容器。