Docker2 docker commit方法鏡像製做

1、前期準備

　　一、下載一個centos鏡像，進入容器，安裝wget

docker pull centos
docker run -it centos bash

[root@web1 ~]# docker run -it centos bash         #進入容器
[root@4f1f1ca319f2 /]# 
[root@4f1f1ca319f2 /]# 
[root@4f1f1ca319f2 /]# cd
[root@4f1f1ca319f2 ~]# ls
anaconda-ks.cfg
[root@4f1f1ca319f2 ~]# cd /etc/yum.repos.d/ #配置yum源
[root@4f1f1ca319f2 yum.repos.d]# ll 
total 32
-rw-r--r-- 1 root root 1664 Nov 23  2018 CentOS-Base.repo
-rw-r--r-- 1 root root 1309 Nov 23  2018 CentOS-CR.repo
-rw-r--r-- 1 root root  649 Nov 23  2018 CentOS-Debuginfo.repo
-rw-r--r-- 1 root root  630 Nov 23  2018 CentOS-Media.repo
-rw-r--r-- 1 root root 1331 Nov 23  2018 CentOS-Sources.repo
-rw-r--r-- 1 root root 5701 Nov 23  2018 CentOS-Vault.repo
-rw-r--r-- 1 root root  314 Nov 23  2018 CentOS-fasttrack.repo
[root@4f1f1ca319f2 yum.repos.d]# yum install wget -y     #安裝wget，默認沒有wget安裝

　　二、安裝軟件源

mkdir backup
mv c*  /etc/yum.repo.d/bakcup

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
wget https://mirrors.aliyun.com/centos/7.6.1810/extras/x86_64/Packages/epel-release-7-11.noarch.rpm

　　三、安裝軟件，好比nginx

yum install nginx -y

 

2、製做鏡像

　　　　說明，下面製做鏡像先用以前的nginx鏡像作的副本，下面纔是centos鏡像

　　一、使用docker commit 來提交容器副本

　　　　-m 提交時的描述文字

dock commit -m 容器 鏡像名
docker commit -m 'add nginx images' mynginx zxg/my_nginx
docker commit -m 'add nginx images' mynginx zxg/my_nginx:v1
docker images
docker ps -a 

[root@web1 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
4f1f1ca319f2        centos              "bash"              About an hour ago   Up About an hour                        musing_lichterman
[root@web1 ~]# docker commit --help

Usage:  docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]

Create a new image from a container's changes

Options:
  -a, --author string    Author (e.g., "John Hannibal Smith <hannibal@a-team.com>")
  -c, --change list      Apply Dockerfile instruction to the created image (default [])
      --help             Print usage
  -m, --message string   Commit message
  -p, --pause            Pause container during commit (default true)
###製做鏡像
[root@web1 ~]# docker commit -m 'add nginx images' mynginx zxg/my_nginx
sha256:f07837869dfc057273c8fd4dad1ddd7f391abb7c75dd4ecf8f84e33e84bc6b0d
[root@web1 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
zxg/my_nginx        latest              f07837869dfc        8 seconds ago       126 MB
docker.io/nginx     latest              e445ab08b2be        6 days ago          126 MB
docker.io/alpine    latest              b7b28af77ffe        2 weeks ago         5.58 MB
docker.io/centos    latest              9f38484d220f        4 months ago        202 MB
###加版本號
[root@web1 ~]# docker commit -m 'add nginx images' mynginx zxg/my_nginx:v1
sha256:b164f4c07c6407420327a48dc0259c52f31cc3ae13ca0b292b8ac5cad1b0052b
[root@web1 ~]# docker images
REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
zxg/my_nginx        v1                  b164f4c07c64        5 seconds ago       126 MB
zxg/my_nginx        latest              f07837869dfc        46 seconds ago      126 MB
docker.io/nginx     latest              e445ab08b2be        6 days ago          126 MB
docker.io/alpine    latest              b7b28af77ffe        2 weeks ago         5.58 MB
docker.io/centos    latest              9f38484d220f        4 months ago        202 MB
[root@web1 ~]# docker run -d --name my_nginx zxg/my_nginx nginx
b326027dcf4275190f7766a65510d73a5f6b15e60875254e5f729f108f809a4e
[root@web1 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
4f1f1ca319f2        centos              "bash"              About an hour ago   Up About an hour                        musing_lichterman
###查看進程
[root@web1 ~]# docker ps -a   
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS               NAMES
b326027dcf42        zxg/my_nginx        "nginx"                  38 seconds ago      Exited (0) 35 seconds ago                       my_nginx
4f1f1ca319f2        centos              "bash"                   About an hour ago   Up About an hour                                musing_lichterman
64b4e32991c7        nginx               "nginx -g 'daemon ..."   3 days ago          Exited (0) 3 days ago                           mynginx1
f8b2da5476ed        nginx               "nginx -g 'daemon ..."   3 days ago          Exited (0) 3 days ago                           mynginx
6dbdfaf6da3a        alpine              "sh"                     4 days ago          Created                                         distracted_shannon
aee506fe7b5a        alpine              "sh"                     4 days ago          Created                                         infallible_haibt
70620c73b9a0        alpine              "sh"                     4 days ago          Created                                         gallant_volhard
7655cbf87bb0        alpine              "sh"                     4 days ago          Created                                         agitated_brahmagupta
33fb949372e8        fce289e99eb9        "/hello"                 4 days ago          Created                                         elastic_dijkstra
9de47616aea4        fce289e99eb9        "/hello"                 4 days ago          Created                                         confident_fermi

 　　　　centos鏡像製做過程以下：

 

[root@web1 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
2940076be5f7        centos              "bash"              About an hour ago   Up About an hour                        suspicious_khorana
[root@web1 ~]# docker commit -m 'add centos-nginx' 2940076be5f7 zxg/centos_nginx:v1
sha256:7c6604cacec13e7caf5b4f99c514009c43df88cf59c69b2ff5a608dfc8216eae
[root@web1 ~]# docker images 
REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
zxg/centos_nginx                    v1                  7c6604cacec1        13 seconds ago      698 MB
docker.io/atlassian/jira-software   latest              c4b90dede4f3        2 days ago          624 MB
zxg/my_nginx                        v1                  b164f4c07c64        3 weeks ago         126 MB
zxg/my_nginx                        latest              f07837869dfc        3 weeks ago         126 MB
docker.io/nginx                     latest              e445ab08b2be        4 weeks ago         126 MB
docker.io/alpine                    latest              b7b28af77ffe        5 weeks ago         5.58 MB
docker.io/centos                    latest              9f38484d220f        5 months ago        202 MB
[root@web1 ~]# 

[root@web1 ~]# docker run -it  --name centos-nginx zxg/centos_nginx:v1  /bin/bash
[root@e93232ab8601 /]# 
[root@e93232ab8601 /]# rpm -qa nginx
nginx-1.12.2-3.el7.x86_64
[root@e93232ab8601 /]# 

　　　　另外開一個窗口

[root@web1 ~]# docker ps
CONTAINER ID        IMAGE                 COMMAND             CREATED             STATUS              PORTS               NAMES
e93232ab8601        zxg/centos_nginx:v1   "/bin/bash"         57 seconds ago      Up 55 seconds                           centos-nginx

 

　　二、製做好的鏡像能夠上傳官網（須要註冊帳號）

docker login https:hub.docker.com
docker tag b326027dcf42 docker.io/myname/mynginx　　　　　　#打標籤
docker push docker.io/myname/mynginx

 

 

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