使用Dockerfile创建带Apache服务的CentOS Docker镜像
在宿主机上准备的文件清单:
Dockerfile
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#启动ssh和apache服务的角本 run.sh |
以上文件都放到/root/apache_centos目录下
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mkdir -p /root/apache_centos cd /root/apache_centos |
基础镜像:以镜像centos为基础的开放SSH服务的镜像
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[root@localhost apache_centos] # docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE sshd dockerfile 411d5fb16366 23 hours ago 278 MB centos latest 0f73ae75014f 5 weeks ago 172.3 MB |
一、准备run.sh文件
在/root/apache_centos目录新建run.sh
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vim run.sh |
内容如下:
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#!/bin/bash /usr/sbin/sshd & /usr/local/apache2/bin/httpd -D FOREGROUND |
二、准备Dockerfile
在/root/apache_centos目录新建Dockerfile
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vim Dockerfile |
文件内容如下:
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#新生成的镜像是基于sshd:dockerfile镜像 FROM sshd:dockerfile MAINTAINER by Steven #安装wget RUN yum install -y wget WORKDIR /usr/local/src #下载并解压源码包 RUN wget http: //apache .fayea.com /httpd/httpd-2 .4.17. tar .gz RUN tar -zxvf httpd-2.4.17. tar .gz WORKDIR httpd-2.4.17 #编译安装apache RUN yum install -y gcc make apr-devel apr apr-util apr-util-devel pcre-devel RUN . /configure --prefix= /usr/local/apache2 -- enable -mods-shared=most -- enable -so RUN make RUN make install #修改apache配置文件 RUN sed -i 's/#ServerName www.example.com:80/ServerName localhost:80/g' /usr/local/apache2/conf/httpd .conf #启动apache服务 RUN /usr/local/apache2/bin/httpd #复制服务启动脚本并设置权限 ADD run.sh /usr/local/sbin/run .sh RUN chmod 755 /usr/local/sbin/run .sh #开放80端口 EXPOSE 80 CMD [ "/usr/local/sbin/run.sh" ] |
需要注意的是:在Dockerfile文件中更换当前目录不可以用“cd”命令,而要改用“WORKDIR”.
三、生成镜像
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docker build -t apache_dockerfile:centos . |
查看生成的镜像:
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[root@localhost apache_centos] # docker images REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE apache_dockerfile centos f8f30b4a0ee8 24 minutes ago 440 MB apache centos f92c55dddd07 17 hours ago 423.9 MB sshd dockerfile 411d5fb16366 23 hours ago 278 MB centos latest 0f73ae75014f 5 weeks ago 172.3 MB |
四、根据镜像生成的容器并进行测试
1、生成新的容器
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docker run -d -p 2222:22 -p 8000:80 apache_dockerfile:centos /usr/local/sbin/run .sh |
将容器的22端口和80端口分别映射到到宿主机上的2222端口和8000端口,并运行服务脚本。
2、查看新生成的容器:
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[root@localhost apache_centos] # docker ps -a CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES ae560e497f39 apache_dockerfile:centos " /usr/local/sbin/run 45 seconds ago Up 44 seconds 0.0.0.0:2222->22 /tcp , 0.0.0.0:8000->80 /tcp condescending_bardeen 6490cd244c10 apache:centos " /usr/local/apache2/ 17 hours ago Exited (0) 17 hours ago loving_wright 673e946b57e4 sshd:dockerfile " /usr/local/sbin/run 18 hours ago Exited (137) 17 hours ago reverent_bell |
3、测试
测试apache
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[root@localhost apache_centos] # curl localhost:8000 <html><body><h1>It works!< /h1 >< /body >< /html > |
成功!
测试ssh
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[root@localhost apache_centos] # ssh localhost -p 2222 root@localhost's password: |
成功!
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.linuxidc.com/Linux/2016-06/132399.htm