8. Docker

1.DockerfileDocker可以通过Dockerfile的内容可以自动构建镜像.

Dockerfile是一个包含创建镜像所有命令的文本文件, 通过docker build命令可以根据Dockerfile的内容构建镜像,下面介绍Dockerfile基本语法结构
Dockerfile语法

2. 使用Dockerfile安装Nginx

bash-3.2# vim Dockerfile
From centos-6-x86_minimal:latest
MAINTAINER  90root admin@90root.com
RUN yum install -y pcre-devel wget net-tools gcc zblic zlib-devel make opensshl-devel
ADD http://nginx.org/download/nginx-1.8.1.tar.gz .
RUN tar zxvf nginx-1.8.1.tar.gz
RUN mkdir -p /usr/local/nginx
RUN cd nginx-1.8.1 && ./configure --prefix=/usr/local/nginx && make && make install
EXPOSE 80
bash-3.2# docker build -t centos6_nginx .
bash-3.2# docker run -itd --name nginx -P centos6_nginx:latest bash
bash-3.2# docker exec -it nginx bash
0472cbadc714# /usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf
0472cbadc714# lsof -i:80
COMMAND PID USER   FD   TYPE  DEVICE SIZE/OFF NODE NAME
nginx    33 root    6u  IPv4 5213185      0t0  TCP *:http (LISTEN)
bash-3.2# docker ps
CONTAINER ID        IMAGE                  COMMAND             CREATED              STATUS              PORTS                     NAMES
0472cbadc714        centos6_nginx:latest   "bash"              About a minute ago   Up About a minute   0.0.0.0:9000->80/tcp      nginx
bash-3.2# curl 127.0.0.1:9000 -I
HTTP/1.1 200 OK
Server: nginx/1.8.1
Date: Thu, 23 Jun 2016 00:53:39 GMT
Content-Type: text/html
Content-Length: 612
Last-Modified: Thu, 23 Jun 2016 00:30:25 GMT
Connection: keep-alive
ETag: "576b2da1-264"
Accept-Ranges: bytes
### 或者浏览器访问192.168.1.40:9000