docker技巧

清理docker镜像

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docker system prune -a
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#清理docker
clean_docker_images.sh

#!/bin/sh
# Auth: zisefeizhu  Time: 2022-06-17-09:42:11 Place:宝山-上海
# 功能:清理大于最近5个版本的镜像

# 先清除悬空镜像 悬空一定不可用
# 悬空镜像清除成功与否不影响下一步执行
docker rmi $(docker images -f "dangling=true" -q)

# 删除过期镜像,保留最新5个版本
Reserved_Version=5
CleanDate=`date '+%Y-%m-%d_%H:%M:%S'`

# 主逻辑
for imageName in `docker images | awk '{print $1}' |sort -u`
do
        version=`docker images | grep ${imageName} | awk '{print $2}'`
        versionTotal=`docker images | grep ${imageName} | awk '{print $2}'|wc -l`
        if [[ ${versionTotal} -gt ${Reserved_Version} ]];then
                tag=(${version// /})
                #保留同样类型的5个镜像
                for(( j=${Reserved_Version};j<${#tag[@]};j++)) do
                        docker rmi ${imageName}:${tag[j]}
                        echo "docker rmi ${imageName}:${tag[j]}   执行时间:${CleanDate}"
                done
        fi
done
Licensed under CC BY-NC-SA 4.0
最后更新于 Jan 06, 2025 05:52 UTC
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