基于centos镜像进行构建nginx镜像

#下载镜像

[root@compute ~]# docker pull centos

[root@compute ~]# docker pull nginx

[root@compute ~]# docker images

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE

docker.io/centos    latest              ff426288ea90        13 days ago         207.2 MB

docker.io/nginx     latest              3f8a4339aadd        3 weeks ago         108.5 MB

#先创建centos镜像

[root@compute ~]# docker run --name nginxdocker -ti centos

[root@10859f0ffd78 /]# yum install -y wget

[root@10859f0ffd78 /]# wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

#安装nginx

[root@10859f0ffd78 /]# yum install -y nginx

[root@10859f0ffd78 /]# sed -i '3a daemon off;' /etc/nginx/nginx.conf

[root@10859f0ffd78 /]# exit

[root@compute ~]# docker ps -a

CONTAINER ID        IMAGE                COMMAND                  CREATED             STATUS                      PORTS                NAMES

10859f0ffd78        centos               "/bin/bash"              7 minutes ago       Exited (0) 19 seconds ago                        nginxdocker

#构建镜像

[root@compute ~]# docker commit -m "test Nginx" 10859f0ffd78 nginxdocker/nginxdocker:v1

sha256:616e9d624b9a1db8e23491db331228ca56dd60c04356da14ab6d7e4cf821d415

You have new mail in /var/spool/mail/root

[root@compute ~]# docker images

REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE

nginxdocker/nginxdocker   v1                  616e9d624b9a        10 seconds ago      383.9 MB

#启动容器

[root@compute ~]# docker run --name nginxserver -d -p 82:80 nginxdocker/nginxdocker:v1 nginx

c2ded9ce8af76c3b4862ca54478d39429879c856a2751957c9287df077dfcf17

[root@compute ~]# docker ps

CONTAINER ID        IMAGE                        COMMAND             CREATED             STATUS              PORTS                NAMES

c2ded9ce8af7        nginxdocker/nginxdocker:v1   "nginx"             21 seconds ago      Up 19 seconds       0.0.0.0:82->80/tcp   nginxserver

#测试

[root@compute ~]# curl  -I 192.168.128.165:82

HTTP/1.1 200 OK

Server: nginx/1.12.2

Date: Mon, 22 Jan 2018 08:15:39 GMT

Content-Type: text/html

Content-Length: 3700

Last-Modified: Wed, 18 Oct 2017 08:08:18 GMT

Connection: keep-alive

ETag: "59e70bf2-e74"

Accept-Ranges: bytes

#创建目录

[root@compute ~]# mkdir /dokerfile

[root@compute ~]# cd /dokerfile/

[root@compute dokerfile]# mkdir nginx

[root@compute dokerfile]# cd nginx/

#添加Dockerfile文件注意D大写

[root@compute nginx]# vim Dockerfile

#This dockerfile uses the centos image

#VERSION 2 - EDITION 1

#Author:jianlaihe

#Command format:

# 指定基于的基础镜像

FROM centos

#维护者信息

MAINTAINER jianlaihe hejianlai@dnion.com

#镜像的操作指令

RUN yum install -y wget

RUN wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/re

po/epel-7.repo

RUN yum install -y nginx

RUN echo "daemon off;" >>/etc/nginx/nginx.conf

#添加文件需存在当前目录下

ADD index.html /usr/share/nginx/html/index.html

EXPOSE 80

#容器启动时执行命令

CMD /usr/sbin/nginx

[root@compute nginx]# echo "hello docker" >index.html

#docker build命令构建镜像名为nginx版本v2

[root@compute nginx]# docker build -t nginx:v2 .

Complete!

 ---> 5e37422db8b2

Removing intermediate container 87fa82c1173a

Step 6 : RUN echo "daemon off;" >>/etc/nginx/nginx.conf

 ---> Running in a03da9a96436

 ---> 236590c11b39

Removing intermediate container a03da9a96436

Step 7 : ADD index.html /usr/share/nginx/html/index.html

 ---> ac28fc354cad

Removing intermediate container 5c2d9944e6f3

Step 8 : EXPOSE 80

 ---> Running in 0b598a0680b8

 ---> d4addb2c20ba

Removing intermediate container 0b598a0680b8

Step 9 : CMD /usr/sbin/nginx

 ---> Running in d1feaede849f

 ---> 4905d9869aa7

Removing intermediate container d1feaede849f

Successfully built 4905d9869aa7

[root@compute nginx]# docker images

REPOSITORY                TAG                 IMAGE ID            CREATED             SIZE

nginx                     v2                  4905d9869aa7        53 seconds ago      404.1 MB

#启动容器

[root@compute nginx]# docker run --name testnginx -d -p 83:80 nginx:v2

b2cd72936465464bb8a88e9b3c5df0015241c7d17cb74062433ef79582c58908

#测试

[root@compute nginx]# curl  192.168.128.165:83

hello docker