3 Docker

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Table of Contents

• 一、Docker带来了哪些改变
• 二、Docker安装与部署
• 三、Docker容器创建与启停
• 四、Docker镜像管理

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一、Docker带来了哪些改变

二、Docker安装与部署

• 修改Docker数据目录

#编辑配置文件
vim /etc/docker/daemon.json
#添加配置
{
  "data-root": "/data/docker-home"
}
#重启服务
systemctl restart docker
#检查是否生效
docker info

三、Docker容器创建与启停

四、Docker镜像管理

#展示当前已经拉取到本地的镜像
docker images

#镜像拉取
docker pull  nginx

#搜索镜像仓库中的 nginx及其相关 镜像
docker search nginx

#删除nginx镜像
docker image rm nignx

#将ID为e1ca7233c2fa的镜像保存为本地/tmp目录下uptime-kuma.tar.gz
docker save e1ca7233c2fa -o /tmp/uptime-kuma.tar.gz

#将文件uptime-kuma.tar.gz，已离线的方式导入为docker镜像并且命名为uptime-kuma:latest

[root@x tmp]# docker import /tmp/uptime-kuma.tar.gz uptime-kuma:latest
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
Getting image source signatures
Copying blob 2efd0f93ef9a done   | 
Copying config c48f9721a3 done   | 
Writing manifest to image destination
sha256:c48f9721a343d5b7e2e5eaf1d36c6f4235548db4207fa0d313161c3de8add5e9
[root@x tmp]# 
[root@x tmp]# docker images
Emulate Docker CLI using podman. Create /etc/containers/nodocker to quiet msg.
REPOSITORY             TAG         IMAGE ID      CREATED         SIZE
localhost/uptime-kuma  latest      c48f9721a343  16 minutes ago  464 MB