Docker-容器服务 Container Service04（构建镜像+仓库配置）

Posted 2020-12-30

Docker-构建镜像-仓库配置 04

一、Docker 镜像介绍

Docker镜像构建分为两种：
1） 手动构建
2） Dockerfile（自动构建）

二、手动构建过程

基于 centos 镜像进行构建，制作 nginx镜像

1）创建镜像，并安装nginx

[[email protected] opt]# docker run --name qiuyuetao -it centos
#  在centos上装个nginx
#  阿里云找到epel源
[[email protected] /]# rpm -ivh https://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm
[[email protected] /]# yum install nginx -y       #安装nginx

2）修改nginx配置文件，让它运行在前台

[[email protected] /]# head /etc/nginx/nginx.conf
daemon off;  ## 取消后台运行，在user 上面添加这一行
user nginx;
#修改完之后 exit 退出

3） 查询Container ID

[[email protected] opt]# docker ps -a  #找到刚才创建容器的CONTAINER ID 
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                     PORTS                      NAMES
0fa09f7a0afe        centos              "/bin/bash"              20 minutes ago      Up 4 minutes                                          qiuyuetao

4）将现有容器保存为镜像，命名为qiuyuetao/qiuyuetao

[[email protected] opt]# docker commit -m "Mynginx" 0fa09f7a0afe qiuyuetao/qiuyuetao:v1

[[email protected] opt]# docker images   #查看镜像是否生成
REPOSITORY            TAG                 IMAGE ID            CREATED             SIZE
qiuyuetao/qiuyuetao   v1                  14ea0f79983d        24 seconds ago      406 MB
#注释
#-m 描述
#容器ID
第一个qiuyuetaor是仓库的名称
第二个qiuyuetao是镜像的名称
#v1 标签，如果是最后一个版本我们可以打latest

5) 使用刚制作好的nginx镜像

[[email protected] opt]# docker run -d -p 82:80  qiuyuetao/qiuyuetao:v1 nginx
3f78858078c2aa4805dbf255a654cd2c136d3ee6f814527ebb7eb93d4edfb657
##   -d 后台运行
##   -p 指定端口
##   qiuyuetao/qiuyuetao:v1 版本库及版本号
##  nginx 执行的命令，例如/bin/bash ，如果nginx没有环境变量，需要数据全路径

6）nginx展示页

[[email protected] opt]# docker ps 
CONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS              PORTS                NAMES
3f78858078c2        qiuyuetao/qiuyuetao:v1   "nginx"                  4 minutes ago       Up 4 minutes        0.0.0.0:82->80/tcp   wizardly_lumiere

7）日志查询

[[email protected] opt]# docker exec -it  3f78858078c2 tail /var/log/nginx/access.log
192.168.56.1 - - [16/Aug/2018:17:27:25 +0000] "GET / HTTP/1.1" 200 3700 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (Khtml, like Gecko) Chrome/68.0.3440.106 Safari/537.36" "-"
192.168.56.1 - - [16/Aug/2018:17:27:25 +0000] "GET /robots.txt HTTP/1.1" 404 3650 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36" "-"
192.168.56.1 - - [16/Aug/2018:17:27:25 +0000] "GET /nginx-logo.png HTTP/1.1" 200 368 "http://192.168.56.11:82/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36" "-"
192.168.56.1 - - [16/Aug/2018:17:27:25 +0000] "GET /poweredby.png HTTP/1.1" 200 2811 "http://192.168.56.11:82/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36" "-"
192.168.56.1 - - [16/Aug/2018:17:27:26 +0000] "GET /favicon.ico HTTP/1.1" 404 3650 "http://192.168.56.11:82/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36" "-"

8）手动构建总结：