尚硅谷Docker实战教程-笔记04【Docker镜像】

news2024/10/6 4:14:34

尚硅谷大数据技术-教程-学习路线-笔记汇总表【课程资料下载】
视频地址：尚硅谷Docker实战教程（docker教程天花板）_哔哩哔哩_bilibili

尚硅谷Docker实战教程-笔记01【理念简介、官网介绍、平台入门图解、平台架构图解】
尚硅谷Docker实战教程-笔记02【安装docker、镜像加速器配置】
尚硅谷Docker实战教程-笔记03【Docker常用命令】
尚硅谷Docker实战教程-笔记04【Docker镜像】
尚硅谷Docker实战教程-笔记05【】
尚硅谷Docker实战教程-笔记06【】
尚硅谷Docker实战教程-笔记07【】
尚硅谷Docker实战教程-笔记08【】

1.基础篇

4.Docker镜像

P023【23_镜像的分层概念】15:03

P024【24_commit命令上集】06:33

P025【25_commit命令下集】05:32

1.基础篇

4.Docker镜像

P023【23_镜像的分层概念】15:03

当容器启动时，一个新的可写层被加载到镜像的顶部。这一层通常被称作“容器层”，“容器层”之下的都叫“镜像层”。

所有对容器的改动 - 无论添加、删除、还是修改文件都只会发生在容器层中。只有容器层是可写的，容器层下面的所有镜像层都是只读的。

[root@node001 ~]# docker images
REPOSITORY       TAG       IMAGE ID       CREATED         SIZE
atguigu/ubuntu   3.7       7b40f602c178   13 hours ago    72.8MB
hello-world      <none>    9c7a54a9a43c   8 weeks ago     13.3kB
ubuntu           latest    ba6acccedd29   20 months ago   72.8MB
hello-world      latest    feb5d9fea6a5   21 months ago   13.3kB
redis            6.0.8     16ecd2772934   2 years ago     104MB
[root@node001 ~]# docker pull tomcat
Using default tag: latest
latest: Pulling from library/tomcat
0e29546d541c: Pull complete 
9b829c73b52b: Pull complete 
cb5b7ae36172: Pull complete 
6494e4811622: Pull complete 
668f6fcc5fa5: Pull complete 
dc120c3e0290: Pull complete 
8f7c0eebb7b1: Pull complete 
77b694f83996: Pull complete 
0f611256ec3a: Pull complete 
4f25def12f23: Pull complete 
Digest: sha256:9dee185c3b161cdfede1f5e35e8b56ebc9de88ed3a79526939701f3537a52324
Status: Downloaded newer image for tomcat:latest
docker.io/library/tomcat:latest
[root@node001 ~]# docker run -it ubuntu /bin/bash
root@d5d7bf226e1e:/# ls
bin  boot  dev  etc  home  lib  lib32  lib64  libx32  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
root@d5d7bf226e1e:/#

P024【24_commit命令上集】06:33

root@d5d7bf226e1e:/# apt-get update
root@d5d7bf226e1e:/# apt-get -y install vim
root@d5d7bf226e1e:/# pwd
/
root@d5d7bf226e1e:/# vim a.txt
root@d5d7bf226e1e:/# cat a.txt
Hello, apex !
root@d5d7bf226e1e:/#

P025【25_commit命令下集】05:32

docker commit -m="提交的描述信息" -a="作者" 容器ID 要创建的目标镜像名:[标签名]

[root@node001 ~]# docker ps
CONTAINER ID   IMAGE     COMMAND       CREATED          STATUS          PORTS     NAMES
d5d7bf226e1e   ubuntu    "/bin/bash"   21 minutes ago   Up 21 minutes             sharp_rosalind
[root@node001 ~]# docker commit -m="vim cmd add ok" -a="vlu" d5d7bf226e1e vlu/mybuntu:1.3
sha256:079bf1275a8a2e7aedd35132d2f4fafc407d799d1f9a3204ef97aed35da20a34
[root@node001 ~]# docker images
REPOSITORY       TAG       IMAGE ID       CREATED          SIZE
vlu/mybuntu      1.3       079bf1275a8a   13 seconds ago   185MB
atguigu/ubuntu   3.7       7b40f602c178   13 hours ago     72.8MB
hello-world      <none>    9c7a54a9a43c   8 weeks ago      13.3kB
tomcat           latest    fb5657adc892   18 months ago    680MB
ubuntu           latest    ba6acccedd29   20 months ago    72.8MB
hello-world      latest    feb5d9fea6a5   21 months ago    13.3kB
redis            6.0.8     16ecd2772934   2 years ago      104MB
[root@node001 ~]#

[root@node001 ~]# docker stop d5d7bf226e1e
d5d7bf226e1e
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@node001 ~]# docker images
REPOSITORY       TAG       IMAGE ID       CREATED         SIZE
vlu/mybuntu      1.3       079bf1275a8a   3 minutes ago   185MB
atguigu/ubuntu   3.7       7b40f602c178   13 hours ago    72.8MB
hello-world      <none>    9c7a54a9a43c   8 weeks ago     13.3kB
tomcat           latest    fb5657adc892   18 months ago   680MB
ubuntu           latest    ba6acccedd29   20 months ago   72.8MB
hello-world      latest    feb5d9fea6a5   21 months ago   13.3kB
redis            6.0.8     16ecd2772934   2 years ago     104MB
[root@node001 ~]# docker run -it 079bf1275a8a /bin/bash
root@ddd323dc5d61:/# vim a.txt
root@ddd323dc5d61:/# cat a.txt 
Hello, apex !
root@ddd323dc5d61:/#