【第六节】docker应用系列篇： 使用Dockerfile构建nginx

系列文章目录

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前言

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提示：以下是本篇文章正文内容，下面案例可供参考

一、 准备dockerfile

1. 简单dockerFile

[root@localhost ~]# mkdir nginxroot
[root@localhost ~]# cd nginxroot
[root@localhost nginxroot]#

[root@localhost nginxroot]# echo "nginx's running" >> index.html
[root@localhost nginxroot]# ls
index.html
[root@localhost nginxroot]# cat index.html
nginx's running

[root@localhost nginxroot]# vim Dockerfile
[root@localhost nginxroot]# cat Dockerfile
FROM centos:centos7

MAINTAINER "www.kubemsb.com"

RUN yum -y install wget

RUN wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

RUN yum -y install nginx

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

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

EXPOSE 80

CMD /usr/sbin/nginx

1.2 解决网络问题的dockerfile

上面的dockerFile如果有网络问题，无法使用yum，可以更换yum源, 使用阿里的yum源

[root@vm31 nginxroot-ali]# cat Dockerfile 
FROM centos:centos7
MAINTAINER "www.kuberick.com"

RUN  rm -f /etc/yum.repos.d/* 

ADD ali.repo /etc/yum.repos.d/

RUN  yum -y install wget

RUN wget -O /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

RUN yum -y install nginx

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

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

EXPOSE 80

CMD /usr/sbin/nginx

ali.repo

[base]
name=CentOS-$releasever - Base - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

[updates]
name=CentOS-$releasever - Updates - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

[extras]
name=CentOS-$releasever - Extras - mirrors.aliyun.com
baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
gpgcheck=1
gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7

2. 构建结果：

[root@localhost nginxroot]# docker build -t centos7-nginx:v1 .

[root@vm31 ~]# docker images
REPOSITORY                        TAG       IMAGE ID       CREATED         SIZE
centos7-nginx                     v1        81440cec486b   7 minutes ago   757MB

3. 构建过程：