DevOps Project with GIT--JENKINS--Docker

•                                           DevOps Project
• Launch an EC2 instance for Docker host
• Install docker on EC2 instance and start services
• yum install docker
• service docker start
• create a new user for Docker management and add him to Docker (default) group
• useradd dockeradmin
• passwd dockeradmin
• usermod -aG docker dockeradmin
• Write a Docker file under 
• /opt/docker
• mkdir /opt/docker

               ### vi Dockerfile
                      From tomcat:8-jre8 
                      MAINTAINER "sai" 
                      COPY ./webapp.war /usr/local/tomcat/webapps

• 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
• Create Jenkins job
• A)  Source Code Management
•       Repository : GITHUB  URL
•       Branches to build : */master
• B)  Build Root POM: pom.xml
•       Goals and options : clean install package
•                                       : MVN Clean 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 demo;
• docker rm -f demo;
• docker image rm -f demo;
• cd /opt/docker;
• docker build -t  imagedemo .
• D) send files or execute commands over SSH
•      Name: docker_host
•      Exec command : docker run -d --name demo -p 8090:8080  imagedemo
•      Login to Docker host and check images and containers. (no images and containers)
•      Execute Jenkins job
•      check images and containers again on Docker host. This time an image and container get     creates through Jenkins job
• Access web application from browser which is running on container
• <docker_host_Public_IP>:8090