[Docker Docker] use java-based build environment container centos7

Docker installation and introduction of reference

 

1. Operating Environment: CentOS 7, Docker, jdk installation package I use jdk-8u231-linux-x64.tar.gz

2. Download a Docker centos7 container and check

# Download mirrors 
Docker pull CentOS: 7 

Is there centos # cuvette list: 7 
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3. Write Dockerfile

First jdk installation package copy to your current directory operations. I tried to use absolute paths but there are problems.

Dockerfile References

# New File 
 Touch Dockerfile

Edit the file #
vim Dockerfile

# Add the following
################################

From centos:7
LABEL maintainer=cn_yeyeck

ADD jdk-8u231-linux-x64.tar.gz /usr/local
ENV JAVA_HOME /usr/local/jdk1.8.0_231
ENV JRE_HOME /usr/local/jdk1.8.0_231/jre
ENV PATH $JAVA_HOME/bin:$JRE_HOME/bin:$PATH

#################################

4. Construction of a new command execution docker build container

# Do not forget to have a back.
Build Docker -t centos7-jdk8: 1 . 

# wait on a command finishes, check the list of containers whether there centos7-jdk8: 1, after the colon is the tag, equivalent to Version 
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5. Enter centos7-jdk8: 1, and checks whether there java environment

 docker run -it centos7-jdk8:1

 

 After you do docker run -it centos7-jdk8: After 1, entered the centos7-jdk8: 1 command line directly execute java -version check whether the environment with good java