一、前期准备

　　1、下载一个centos镜像，进入容器，安装wget

  1. docker pull centos
  2. docker run -it centos bash
  3. [root@web1 ~]# docker run -it centos bash         #进入容器
  4. [root@4f1f1ca319f2 /]# 
  5. [root@4f1f1ca319f2 /]# 
  6. [root@4f1f1ca319f2 /]# cd
  7. [root@4f1f1ca319f2 ~]# ls
  8. anaconda-ks.cfg
  9. [root@4f1f1ca319f2 ~]# cd /etc/yum.repos.d/       #配置yum源
  10. [root@4f1f1ca319f2 yum.repos.d]# ll 
  11. total 32
  12. -rw-r--r-- 1 root root 1664 Nov 23  2018 CentOS-Base.repo
  13. -rw-r--r-- 1 root root 1309 Nov 23  2018 CentOS-CR.repo
  14. -rw-r--r-- 1 root root  649 Nov 23  2018 CentOS-Debuginfo.repo
  15. -rw-r--r-- 1 root root  630 Nov 23  2018 CentOS-Media.repo
  16. -rw-r--r-- 1 root root 1331 Nov 23  2018 CentOS-Sources.repo
  17. -rw-r--r-- 1 root root 5701 Nov 23  2018 CentOS-Vault.repo
  18. -rw-r--r-- 1 root root  314 Nov 23  2018 CentOS-fasttrack.repo
  19. [root@4f1f1ca319f2 yum.repos.d]# yum install wget -y     #安装wget，默认没有wget安装

　　2、安装软件源

  1. mkdir backup
  2. mv c*  /etc/yum.repo.d/bakcup
  3. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
  4. wget https://mirrors.aliyun.com/centos/7.6.1810/extras/x86_64/Packages/epel-release-7-11.noarch.rpm

　　3、安装软件，比如nginx

yum`` ``install`` nginx -y

二、制作镜像

　　　　说明，下面制作镜像先用之前的nginx镜像做的副本，下面才是centos镜像

　　1、使用docker commit 来提交容器副本

  1. -m 提交时的描述文字
  2. dock commit -m 容器 镜像名
  3. docker commit -m 'add nginx images' mynginx zxg/my_nginx
  4. docker commit -m 'add nginx images' mynginx zxg/my_nginx:v1
  5. docker images
  6. docker ps -a
  7. [root@web1 ~]# docker ps
  8. CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
  9. 4f1f1ca319f2        centos              "bash"              About an hour ago   Up About an hour                        musing_lichterman
  10. [root@web1 ~]# docker commit --help
  11. Usage:  docker commit [OPTIONS] CONTAINER [REPOSITORY[:TAG]]
  12. Create a new image from a container's changes
  13. Options:
  14.   -a, --author string    Author (e.g., "John Hannibal Smith <hannibal@a-team.com>")
  15.   -c, --change list      Apply Dockerfile instruction to the created image (default [])
  16.       --help             Print usage
  17.   -m, --message string   Commit message
  18.   -p, --pause            Pause container during commit (default true)
  19. ###制作镜像
  20. [root@web1 ~]# docker commit -m 'add nginx images' mynginx zxg/my_nginx
  21. sha256:f07837869dfc057273c8fd4dad1ddd7f391abb7c75dd4ecf8f84e33e84bc6b0d
  22. [root@web1 ~]# docker images
  23. REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
  24. zxg/my_nginx        latest              f07837869dfc        8 seconds ago       126 MB
  25. docker.io/nginx     latest              e445ab08b2be        6 days ago          126 MB
  26. docker.io/alpine    latest              b7b28af77ffe        2 weeks ago         5.58 MB
  27. docker.io/centos    latest              9f38484d220f        4 months ago        202 MB
  28. ###加版本号
  29. [root@web1 ~]# docker commit -m 'add nginx images' mynginx zxg/my_nginx:v1
  30. sha256:b164f4c07c6407420327a48dc0259c52f31cc3ae13ca0b292b8ac5cad1b0052b
  31. [root@web1 ~]# docker images
  32. REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
  33. zxg/my_nginx        v1                  b164f4c07c64        5 seconds ago       126 MB
  34. zxg/my_nginx        latest              f07837869dfc        46 seconds ago      126 MB
  35. docker.io/nginx     latest              e445ab08b2be        6 days ago          126 MB
  36. docker.io/alpine    latest              b7b28af77ffe        2 weeks ago         5.58 MB
  37. docker.io/centos    latest              9f38484d220f        4 months ago        202 MB
  38. [root@web1 ~]# docker run -d --name my_nginx zxg/my_nginx nginx
  39. b326027dcf4275190f7766a65510d73a5f6b15e60875254e5f729f108f809a4e
  40. [root@web1 ~]# docker ps
  41. CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
  42. 4f1f1ca319f2        centos              "bash"              About an hour ago   Up About an hour                        musing_lichterman
  43. ###查看进程
  44. [root@web1 ~]# docker ps -a   
  45. CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                      PORTS               NAMES
  46. b326027dcf42        zxg/my_nginx        "nginx"                  38 seconds ago      Exited (0) 35 seconds ago                       my_nginx
  47. 4f1f1ca319f2        centos              "bash"                   About an hour ago   Up About an hour                                musing_lichterman
  48. 64b4e32991c7        nginx               "nginx -g 'daemon ..."   3 days ago          Exited (0) 3 days ago                           mynginx1
  49. f8b2da5476ed        nginx               "nginx -g 'daemon ..."   3 days ago          Exited (0) 3 days ago                           mynginx
  50. 6dbdfaf6da3a        alpine              "sh"                     4 days ago          Created                                         distracted_shannon
  51. aee506fe7b5a        alpine              "sh"                     4 days ago          Created                                         infallible_haibt
  52. 70620c73b9a0        alpine              "sh"                     4 days ago          Created                                         gallant_volhard
  53. 7655cbf87bb0        alpine              "sh"                     4 days ago          Created                                         agitated_brahmagupta
  54. 33fb949372e8        fce289e99eb9        "/hello"                 4 days ago          Created                                         elastic_dijkstra
  55. 9de47616aea4        fce289e99eb9        "/hello"                 4 days ago          Created                                         confident_fermi
  56.  　　　　centos镜像制作过程如下：
  58. [root@web1 ~]# docker ps
  59. CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS               NAMES
  60. 2940076be5f7        centos              "bash"              About an hour ago   Up About an hour                        suspicious_khorana
  61. [root@web1 ~]# docker commit -m 'add centos-nginx' 2940076be5f7 zxg/centos_nginx:v1
  62. sha256:7c6604cacec13e7caf5b4f99c514009c43df88cf59c69b2ff5a608dfc8216eae
  63. [root@web1 ~]# docker images 
  64. REPOSITORY                          TAG                 IMAGE ID            CREATED             SIZE
  65. zxg/centos_nginx                    v1                  7c6604cacec1        13 seconds ago      698 MB
  66. docker.io/atlassian/jira-software   latest              c4b90dede4f3        2 days ago          624 MB
  67. zxg/my_nginx                        v1                  b164f4c07c64        3 weeks ago         126 MB
  68. zxg/my_nginx                        latest              f07837869dfc        3 weeks ago         126 MB
  69. docker.io/nginx                     latest              e445ab08b2be        4 weeks ago         126 MB
  70. docker.io/alpine                    latest              b7b28af77ffe        5 weeks ago         5.58 MB
  71. docker.io/centos                    latest              9f38484d220f        5 months ago        202 MB
  72. [root@web1 ~]#
  73. [root@web1 ~]# docker run -it  --name centos-nginx zxg/centos_nginx:v1  /bin/bash
  74. [root@e93232ab8601 /]# 
  75. [root@e93232ab8601 /]# rpm -qa nginx
  76. nginx-1.12.2-3.el7.x86_64
  77. [root@e93232ab8601 /]#
  78. 　　　　另外开一个窗口
  79. [root@web1 ~]# docker ps
  80. CONTAINER ID        IMAGE                 COMMAND             CREATED             STATUS              PORTS               NAMES
  81. e93232ab8601        zxg/centos_nginx:v1   "/bin/bash"         57 seconds ago      Up 55 seconds                           centos-nginx

　　2、制作好的镜像可以上传官网（需要注册账号）

  1. docker login https:hub.docker.com
  2. docker tag b326027dcf42 docker.io/myname/mynginx      #打标签
  3. docker push docker.io/myname/mynginx