下面的命令将帮助从本地存储库中删除所有未使用的和旧的映像 ==> docker系统剪枝——全部

我最近写了一个脚本在我的服务器上解决这个问题:

#!/bin/bash

# Remove all the dangling images
DANGLING_IMAGES=$(docker images -qf "dangling=true")
if [[ -n $DANGLING_IMAGES ]]; then
    docker rmi "$DANGLING_IMAGES"
fi

# Get all the images currently in use
USED_IMAGES=($( \
    docker ps -a --format '{{.Image}}' | \
    sort -u | \
    uniq | \
    awk -F ':' '$2{print $1":"$2}!$2{print $1":latest"}' \
))

# Get all the images currently available
ALL_IMAGES=($( \
    docker images --format '{{.Repository}}:{{.Tag}}' | \
    sort -u \
))

# Remove the unused images
for i in "${ALL_IMAGES[@]}"; do
    UNUSED=true
    for j in "${USED_IMAGES[@]}"; do
        if [[ "$i" == "$j" ]]; then
            UNUSED=false
        fi
    done
    if [[ "$UNUSED" == true ]]; then
        docker rmi "$i"
    fi
done

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。

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

docker rm `docker ps -aq`

or

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

要删除超过一个月的旧标记图像:

$ docker images --no-trunc --format '{{.ID}} {{.CreatedSince}}' \
    | grep ' months' | awk '{ print $1 }' \
    | xargs --no-run-if-empty docker rmi

注意，它将无法删除容器使用的图像，在存储库中引用，有依赖的子图像…这可能是你想要的。否则只需添加-f标志。

/etc/cron.示例每日/ docker-gc脚本:

#!/bin/sh -e

# Delete all stopped containers (including data-only containers).
docker ps -a -q --no-trunc --filter "status=exited" | xargs --no-run-if-empty docker rm -v

# Delete all tagged images more than a month old
# (will fail to remove images still used).
docker images --no-trunc --format '{{.ID}} {{.CreatedSince}}' | grep ' months' | awk '{ print $1 }' | xargs --no-run-if-empty docker rmi || true

# Delete all 'untagged/dangling' (<none>) images
# Those are used for Docker caching mechanism.
docker images -q --no-trunc --filter dangling=true | xargs --no-run-if-empty docker rmi

# Delete all dangling volumes.
docker volume ls -qf dangling=true | xargs --no-run-if-empty docker volume rm