一、dockerfile应用

[root@docker ~]# mkdir http0

[root@docker ~]# cd http0/

[root@docker http0]# vim abc.sh

[root@docker http0]# ls

abc.sh

[root@docker http0]# vim abc.sh

#!/bin/bash

rm -rf /run/*httpd*

exec /sbin/httpd -D FOREGROUND

[root@docker http0]# echo "http server is running" > index.html

[root@docker http0]# vim Dockerfile

FROM    centos:latest

RUN     rm -rf /etc/yum.repos.d/* && curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo

RUN     yum clean all && yum makecache
RUN     yum -y install httpd
ADD     index.html /var/www/html/index.html
ADD     abc.sh /abc.sh
RUN     chmod -v +x /abc.sh
CMD     ["/bin/bash","/abc.sh"]

[root@docker http0]# ls
abc.sh  Dockerfile  index.html
[root@docker http0]# docker build -t centos:http0 .

[root@docker http0]# docker run -d --name c0 -p80:80 centos:http0

[root@docker ~]# mkdir 001
[root@docker ~]# cd 001
[root@docker 001]# vim abc.sh

#!/bin/bash
rm -rf /run/httpd/*
exec /sbin/httpd -D FOREGROUND

[root@docker 001]# echo "abc" > index.html
[root@docker 001]# ls
abc.sh  index.html
[root@docker 001]# vim Dockerfile

FROM    centos:latest
MAINTAINER      "centos http server"
RUN     rm -rf /etc/yum.repos.d/*
RUN     curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-vault-8.5.2111.repo
RUN     yum clean all && yum makecache
RUN     yum -y install epel-release
RUN     yum -y install httpd
ADD     abc.sh /abc.sh
ADD     index.html /var/www/html/index.html
RUN     chmod -v +x /abc.sh
CMD     ["/bin/bash","/abc.sh"]

[root@docker 001]# docker build centos:httpd .
[root@docker 001]# docker run -d --name a0 centos:httpd
[root@docker 001]# docker ps -all

CONTAINER ID   IMAGE          COMMAND               CREATED         STATUS         PORTS     NAMES
ce92cdc405ef   centos:httpd   "/bin/bash /abc.sh"   5 seconds ago   Up 5 seconds             a0

[root@docker 001]# curl 172.17.0.2
abc

[root@docker 001]# docker run -d -v /opt/:/var/www/html/ -p80 --name a1 centos:httpd
[root@docker 001]# ls /opt/
assets  containerd  favicon.ico  index.html
[root@docker 001]# docker ps --all

CONTAINER ID   IMAGE          COMMAND               CREATED         STATUS         PORTS                                     NAMES
27088f8c757f   centos:httpd   "/bin/bash /abc.sh"   2 minutes ago   Up 2 minutes   0.0.0.0:32768->80/tcp, :::32768->80/tcp   a1
ce92cdc405ef   centos:httpd   "/bin/bash /abc.sh"   6 minutes ago   Up 6 minutes                                             a0

[root@docker 001]# docker images
REPOSITORY   TAG       IMAGE ID       CREATED          SIZE
centos       httpd     c18a3916c55a   54 minutes ago   338MB
centos       yum       f19cf4c62358   55 minutes ago   272MB
centos       latest    5d0da3dc9764   2 years ago      231MB

[root@docker docker]# du -sh /var/lib/docker/overlay2/
343M    /var/lib/docker/overlay2/

[root@docker ~]# mkdir 002
[root@docker ~]# cd 002/
[root@docker 002]# vim Dockerfile 

FROM    centos:yum
RUN     yum -y install nginx
RUN     echo "daemon" >> /etc/nginx/nginx.conf
CMD     /usr/sbin/nginx

[root@docker 002]# docker build -t centos:nginx .

[root@docker 002]# docker run -d --name c0 centos:nginx
[root@docker 002]# curl 172.17.0.2

 二、创建私有仓库，在企业中分享项目

1、拉取registry

[root@docker 002]# docker pull registry

2、创建挂载目录

[root@docker 002]# mkdir /regist

3、启动容器，并且映射端口，挂载目录

[root@docker 002]# docker run -d --name r1 -v "/regist/:/var/lib/registry" -p5000:5000 registry:latest
[root@docker 002]# docker ps

CONTAINER ID   IMAGE             COMMAND                   CREATED         STATUS         PORTS                                       NAMES
50ebe3b52ba9   registry:latest   "/entrypoint.sh /etc…"   5 seconds ago   Up 4 seconds   0.0.0.0:5000->5000/tcp, :::5000->5000/tcp   r1

4、访问仓库

[root@docker 002]# curl localhost:5000/v2/_catalog

[root@docker 002]# curl http://192.168.8.196:5000/v2/_catalog

{"repositories":[]}

5、配置pull，push 修改daemon.json文件

 [root@docker 002]# vim /etc/docker/daemon.json

{
        "registry-mirrors": [
                "https://do.nark.eu.org",
                "https://dc.j8.work",
                "https://docker.m.daocloud.io",
                "https://dockerproxy.com",
                "https://docker.mirrors.ustc.edu.cn",
                "https://docker.nju.edu.cn"
        ],
"hosts": [
                "tcp://0.0.0.0:2375",
                "unix:///var/run/docker.sock"
        ],

        "insecure-registries": [
                "http://192.168.8.196:5000"
        ]
}

[root@docker 002]# systemctl restart docker
 

6、启动容器并测试

[root@docker 002]# docker start r1
r1
[root@docker 002]# curl localhost:5000/v2/_catalog
{"repositories":[]}

7、为要上传的镜像添加标记

[root@docker ~]# docker tag centos:yum 192.168.8.196:5000/centos:yum
[root@docker ~]# docker push 192.168.8.196:5000/centos:yum
[root@docker ~]# curl localhost:5000/v2/_catalog
{"repositories":["centos"]}