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在宿主机上准备的文件清单:
1 2 3 | Dockerfile #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
1 2 | 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
[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
1 2 3 4 | vim run.sh #!/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
vim Dockerfile
文件内容如下:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 | #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
1 | docker build -t apache_dockerfile:centos . |
查看生成的镜像:
[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
1 | 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:
[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) reverent_bell
3、测试
测试apache
[root@localhost apache_centos]# curl localhost:8000
<html><body><h1>It works!</h1></body></html>
成功!
测试ssh
[root@localhost apache_centos]# ssh localhost -p 2222
root@localhost's password:
成功!
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