Docker Advanced Chapter 3 - dockerfile case to make your own centos image

In the previous article "Dockerfile Introduction and Common Reserved Instructions" , we introduced what Dockerfile is and the commonly used reserved fields of Dockerfile. After getting familiar with these, do you want to write a Dockerfile by yourself? In this article, we will actually fight our own Dockerfile.

Case requirements:

We use the centos of the remote warehouse as a template to create a mirror image that substitutes vim\ifconfig\java8

jdk mirror address: Index of /jdk/

Steps: write, build, run

write:

Prepare to write Dockerfile. NOTE: The letter D needs to be capitalized.

Create folder: myfile

Then copy the downloaded jdk-8u171-linux-x64.tar.gz to the myfile folder

 

Write Dockerfile:

vim Dockerfile

Copy the following:

FROM centos:7 
MAINTAINER kaigejava 
ENV MYPATH /usr/local 
WORKDIR $MYPATH 
#Install vim editor 
RUN yum -y install vim 
#Install ifconfig command to view network IP 
RUN yum -y install net-tools 
#Install java8 and l