Installing java in Docker image

Question

This is my very first try to create a docker image and I\'m hoping someone can help me out. My Dockerfile looks roughly like this:

FROM mybaseimage:0.1
MAINT         


        

Answer 1

There is already an official repo for java, which uses Open JDK.
Its very easy to use it. Have a look over this repo, which demonstrates very basic hello world program.
Dockerfile:

FROM java:7
COPY src /home/root/java/src
WORKDIR /home/root/java
RUN mkdir bin
RUN javac -d bin src/HelloWorld.java
ENTRYPOINT ["java", "-cp", "bin", "HelloWorld"]

HelloWorld.java file:

public class HelloWorld{
    public static void main(String[] args){
        System.out.println("Hello World!!!");
    }
}