Project 1: Deploying a simple java code Using Docker

Step 1: Launch an EC2 Instance

With the help of this: https://lalitakashyapblog.hashnode.dev/step-by-step-guide-to-setting-up-an-ec2-instance

Step 2: Install docker

With the help of this: https://lalitakashyapblog.hashnode.dev/from-zero-to-docker-a-beginners-introduction-to-containers

Step 3: Create directory and move into it

mkdir projects
cd projects/

Step 4: Create project name directory and move into it

mkdir java-app
cd java-app/

Step 5: Create file "Hello.java" using vim

vim Hello.java

Step 6: Write code in java file

import java.util.*;
public class Hello {
        public static void main(String[] args) {
                System.out.println("Hello");
                Date currentdate =new Date ();
                System.out.println("Today's date:" + currentdate);
        }
}

Step 7: Now create docker file

#Get a base image with jdk installed
FROM openjdk:11

#Create a working directory to run a java app
WORKDIR /app

#Copy code from local machine to docker container
COPY Hello.java .

#Compile the code
RUN javac Hello.java

#Run the java app
CMD ["java", "Hello"]

Step 8: Build image

t- tag and "." use for build image in same directory

docker build -t java-app:latest .

Step 9: Check image created or not

docker images

Step 10: Create and run docker container

docker run java-app:latest

By following these steps, you should be able to successfully deploy your simple Java code using Docker.

Thank you 🙏

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