Dockerfile常用指令案例

喜欢ヅ旅行 2023-06-17 15:56 17阅读 0赞

一.Base镜像（scratch）

docker hub中99%的镜像都是通过在base镜像中安装和配置需要的软件构建出来的

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70][]

二.自定义镜像mycentoses

1.编写：

1）Hub默认centos镜像什么情况， 如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 1][]

现在要实现这3点

![20191129163925357.png][]

2）编写dockerfile文件

FROM centos
    
    MAINTAINER yyf<9465138@qq.com>
    
    ENV MYPATH /usr/local
    
    WORKDIR $MYPATH
    
    RUN yum -y install vim
    
    RUN yum -y install net-tools
    
    EXPOSE 80
    
    CMD echo $MYPATH
    CMD echo "success------ok"
    CMD /bin/bash

2.构建

docker build -t 新镜像名字:TAG .

docker build -f /mydocker/Dockerfile2 -t mycentoses:1.3 .

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 2][]

3.运行

docker run -it mycentoses:1.3

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 3][]

4.列出镜像的变更历史

docker images mycentoses

docker history 容器id

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 4][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191129163010602.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191129163904433.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg==,size_16,color_FFFFFF,t_70
[20191129163925357.png]: https://img-blog.csdnimg.cn/20191129163925357.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191129171407653.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20191129171525342.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg==,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20191129171703577.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbnlmMjAxNg==,size_16,color_FFFFFF,t_70