HandsOn Tutorial at: https://youtu.be/eWtpBiOsny4

1. Launch an EC2 instance for Docker host

2. Install docker on EC2 instance and start services

yum install docker
service docker start

3. create a new user for Docker management and add him to Docker (default) group

useradd dockeradmin
passwd dockeradmin
usermod -aG docker dockeradmin

4. Write a Docker file under /opt/docker

mkdir /opt/docker

### vi Dockerfile
# Pull base image 
From tomcat:9-jre9 

# Maintainer
MAINTAINER "DEVOPS with KK" 

# copy war file on to container 
COPY ./webapp.war /usr/local/tomcat/webapps

5. Login to Jenkins console and add Docker server to execute commands from Jenkins
   Manage Jenkins --> Configure system --> Publish over SSH --> add Docker server and credentials

6. Create Jenkins job

A) Source Code Management
Repository : https://github.com/khalid-kifayat/CICD-GiT-Maven-Jenkins-Docker.git Branches to build : */main

B) Build Root POM: pom.xml
Goals and options : clean install package

C) send files or execute commands over SSH Name: docker_host
Source files : webapp/target/*.war Remove prefix : webapp/target Remote directory : //opt//docker
Exec command[s] :

docker stop docker_demo;
docker rm -f docker_demo;
docker image rm -f docker_demo;
cd /opt/docker;
docker build -t docker_demo .

D) send files or execute commands over SSH
Name: docker_host
Exec command : docker run -d --name docker_demo -p 8090:8080 docker_demo

7. Login to Docker host and check images and containers. (no images and containers)

8. Execute Jenkins job

9. check images and containers again on Docker host on AWS EC2. This time an image and container get creates through Jenkins job

10. Access web application from browser which is running on container

<docker_host_Public_IP>:8090