docker-编译Nginx镜像

自建基于基础的centos7镜像，实现sshd服务和Nginx服务。

1. 先制作基于centos7上实现SSH的镜像

1.1启动一个centos7容器

[root@server1 ~]# docker run -d -p 1022:22 --name centos7_sshd centos:7 /bin/bash
5231d44687e7e11c3aa839855ff21925988b4d23965dae098255c9fe01ca882c

查看容器是否运行

[root@server1 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                  NAMES
5231d44687e7        centos:7            "/bin/bash"         5 seconds ago       Up 3 seconds        0.0.0.0:1022->22/tcp   centos7_sshd

1.2 部署SSHD

进入容器

[root@server1 ~]# docker attach 5231d44687e7

下载openssh

[root@5231d44687e7 /]# yum -y install openssh-server

配置验证信息

[root@5231d44687e7 /]# echo "root:123" | chpasswd

启动ssh

[root@5231d44687e7 /]# whereis sshd
sshd: /usr/sbin/sshd
[root@5231d44687e7 /]# /usr/sbin/sshd

宿主机检测是否连接正常

[root@server1 docker]# ssh 10.30.161.200 -p 1022
root@10.30.161.200's password: 
[root@5231d44687e7 ~]# exit

1.3 将部署好的容器提交为新的镜像

commit后面跟的第一个是当前部署好的镜像，后面的参数是提交后的新镜像名称

[root@server1 docker]# docker commit centos7_sshd 7_sshd
sha256:3a25c24a95c55d31f124d09688919271908b75cae9ed98b1ef5241bd471ecc49

2. 在以上ssh镜像基础上实现Nginx的部署

2.1 在宿主机上准备的文件清单

将以下所需要用到的文件都放到/docker(自定义的目录)下

mkdir /docker  //创建一个镜像目录
ls
[ nginx-1.16.1.tar.gz ] NGINX的源码包
[ Dockerfile ]			dockerfile文件
[ run.sh ]				启动服务的脚本

编辑启动脚本 “run.sh”

[root@server1 docker]# cat run.sh 

#!/bin/bash
/usr/sbin/sshd &
/usr/local/nginx/sbin/nginx -g "daemon off;"

编辑Dockerfile

# This is my first nginx Dockerfile
# author: sihye-hwang
# date: 2019-11-05

# Base images，以上面部署好的sshd镜像为基础
FROM 7_sshd:latest 

# MAINTAINER 
MAINTAINER sihyehwang@yeah.net

# ENV
ENV PATH /usr/local/nginx/sbin:$PATH

# ADD 
ADD nginx-1.16.1.tar.gz /usr/local/

# RUN
RUN rm -rf /etc/yum.repos.d/* 
RUN curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
RUN curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo
RUN yum -y install gcc gcc-c++ make ncurses ncurses-devel openssl-devel pcre-devel pcre lftp openssl zlib zlib-devel
RUN groupadd nginx
RUN useradd -s /sbin/nologin -g nginx nginx

# WORKDIR
WORKDIR /usr/local/nginx-1.16.1

RUN ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --sbin-path=/usr/local/nginx/sbin/nginx --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --with-http_ssl_module --with-pcre && make && make install

RUN chown -R nginx:nginx /usr/local/nginx

RUN /usr/local/nginx/sbin/nginx

ADD run.sh /usr/local/sbin/run.sh
RUN chmod 755 /usr/local/sbin/run.sh

EXPOSE 22
EXPOSE 80

# CMD
CMD ["/usr/local/sbin/run.sh"]

2.2 生成新的nginx镜像

[root@server1 docker]# docker build -t centos_ngixn:7 .
Sending build context to Docker daemon  3.366GB
...
 ---> f321f998c62e
Successfully built f321f998c62e
Successfully tagged centos_ngixn:7

查看当前镜像

[root@server1 docker]# docker image list 
REPOSITORY      TAG         IMAGE ID       CREATED         SIZE
centos_ngixn     7        f321f998c62e   13 minutes ago    554MB
7_sshd       latest       3a25c24a95c5   2 hours ago       284MB

2.3 生成新的容器测试镜像是否正常

[root@server1 docker]# docker run -d -p 2222:22 -p 8788:80 centos_ngixn:7
b6cb700197dab593647b6dfa0b3de6e7f428ca7b9f12922cfc05f881a8de1fe8
# 检测是否正常运行
[root@server1 docker]# docker ps 
CONTAINER ID        IMAGE               COMMAND             CREATED             STATUS              PORTS                                        NAMES
b6cb700197da        centos_ngixn:7      "/usr/local/sbin/run…"   4 seconds ago       Up 3 seconds        0.0.0.0:2222->22/tcp, 0.0.0.0:8788->80/tcp   laughing_elbakyan

宿主机访问测试

[root@server1 docker]# curl -I localhost:8788
HTTP/1.1 200 OK
Server: nginx/1.16.1
Date: Wed, 06 Nov 2019 02:45:05 GMT


[root@server1 docker]# ssh localhost -p 2222
root@localhost's password: 

到此， 基本的ngixn编译访问以实现

3.扩展 – 通过挂载卷部署部署服务

3.1 在宿主机上创建目录与首页

[root@server1 docker]# mkdir /nginx 
[root@server1 docker]# echo 'nice to meet U :)' > /nginx/index.html

3.2 启动一个新容器，创建时并挂载

容器内的发布目录 ： /usr/local/nginx/html

[root@server1 docker]# docker run -d -p 2222:22 -p 8788:80 -v /nginx:/usr/local/nginx/html --name nginx02 centos_ngixn:7
cd005fbaaf4455de7579dee75b7a4d1ce8fae4f9e40c9f4e32abfc80c2cf617c

[root@server1 docker]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                        NAMES
cd005fbaaf44        centos_ngixn:7      "/usr/local/sbin/run…"   3 seconds ago       Up 2 seconds        0.0.0.0:2222->22/tcp, 0.0.0.0:8788->80/tcp   nginx02

测试

[root@server1 docker]# curl localhost:8788
nice to meet U :)

完成

注： 可使用一个卷创建多个容器