Dockerfile快速入门【黑马python培训】

#创建Dockerfile专用目录
:~$ mkdir ./docker/images/nginx -p
:~$ cd docker/images/nginx/
#创建Dockerfile文件
:~/docker/images/nginx$ vim Dockerfile

# 构建一个基于ubuntu的docker定制镜像
# 基础镜像
FROM ubuntu

# 镜像作者
MAINTAINER panda [email]kstwoak47@163.com[/email]

# 执行命令
RUN mkdir hello
RUN mkdir world
RUN sed -i 's/archive.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list
RUN sed -i 's/security.ubuntu.com/mirrors.ustc.edu.cn/g' /etc/apt/sources.list
RUN apt-get update  
RUN apt-get install nginx -y

# 对外端口
EXPOSE 80

#构建镜像
:~/docker/images/nginx$ docker build -t ubuntu-nginx:v0.1 .
#查看新生成镜像
:~/docker/images/nginx$ docker images
REPOSITORY    TAG     IMAGE ID      CREATED        SIZE
ubuntu-nginx  v0.1    a853de1b8be4  9 seconds ago  208MB
nginx         latest  e548f1a579cf  6 days ago     109MB
ubuntu        latest  0458a4468cbc  4 weeks ago    112MB
#查看构建历史
:~/docker/images/nginx$ docker history a853de1b8be4
IMAGE         CREATED            CREATED BY                         SIZE   COMMENT
#镜像			创建时间             依赖命令                            大小    评论
a853de1b8be4  41 seconds ago     /bin/sh -c #(nop)  EXPOSE 80                  0B      
925825b680fd  42 seconds ago     /bin/sh -c apt-get install nginx -y          56.5MB  
4c57d6c99603  About a minute ago /bin/sh -c apt-get update                     40MB    
b6d030a0d123  About a minute ago /bin/sh -c sed -i's/security.ubuntu.com/mir… 2.77kB  
3357bf8069ca  About a minute ago /bin/sh -c sed -i's/archive.ubuntu.com/mirr… 2.77kB  
7bfb90c1e20d  About a minute ago /bin/sh -c mkdir world                         0B      
972d6ab76d01  About a minute ago /bin/sh -c mkdir hello                         0B      
a76394bfad01  About a minute ago /bin/sh -c #(nop) MAINTAINER panda kstwoak4…  0B    
#注意：
因为容器没有启动命令，所以肯定访问不了