Docker实战：使用Dockerfile创建带Apache服务并支持ssh的Centos Docker镜像

迈不过友情╰ 2022-06-07 05:40 184阅读 0赞

在宿主机上准备的文件清单：

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

mkdir -p /root/apache\_centoscd /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 imagesREPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZEsshd dockerfile 411d5fb16366 23 hours ago 278 MBcentos latest 0f73ae75014f 5 weeks ago 172.3 MB

一、准备run.sh文件

vim run.sh

内容如下：

\#!/bin/bash/usr/sbin/sshd &/usr/local/apache2/bin/httpd -D FOREGROUND

二、准备Dockerfile

vim Dockerfile

文件内容如下：

\#新生成的镜像是基于sshd:dockerfile镜像

FROM sshd:dockerfile

MAINTAINER by liyuejin

\#安装wget

RUN yum install -y wget

WORKDIR /usr/local/src

\#下载并解压源码包

RUN wget http://mirrors.tuna.tsinghua.edu.cn/apache//httpd/httpd-2.4.28.tar.gz

RUN tar -zxvf httpd-2.4.28.tar.gz

WORKDIR httpd-2.4.28

\#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

docker build -t apache\_dockerfile:centos .

查看生成的镜像：

\[root@localhost apache\_centos\]\# docker imagesREPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZEapache\_dockerfile centos f8f30b4a0ee8 24 minutes ago 440 MBapache centos f92c55dddd07 17 hours ago 423.9 MBsshd dockerfile 411d5fb16366 23 hours ago 278 MBcentos 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

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 -aCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMESae560e497f39 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\_bardeen6490cd244c10 apache:centos "/usr/local/apache2/ 17 hours ago Exited (0) 17 hours ago loving\_wright673e946b57e4 sshd:dockerfile "/usr/local/sbin/run 18 hours ago Exited (137) 17 hours ago 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 admin@localhost -p 2222root@localhost's password:输入admin密码