Java maven project

Build Project

mvn clean mvn package

Build Custom Docker image

Create custom image

1. build my image

   • docker build -t <tag_name> <path_to_dockerfile> --> docker build -t tomcat_1 .

2. Run

   • docker run <image_name>
   • docker run -d <image_name>
     • docker run -d tomcat_1
   • docker run -d -p <local_port>:<container_port> <image_name>
   • we also run multiple container with same image
     • docker run -dp 8000:8080 tomcat_1
     • docker run -dp 8001:8080 tomcat_1

3. login to container

   • docker exec -it <container_id> /bin/bash

4. Docker Push and Pull Own Images

   • To Push into Docker hub, login to docker with your docker credentials

     • docker login
     • docker image tag tomcat_1:latest seetha123/pac_tomcat:latest
     • docker image push seetha123/pac_tomcat:latest

   • Pull image from docker hub

     • docker pull seetha123/pac_tomcat
     • docker run -dp 8080:8080 seetha123/pac_tomcat

Jenkinsfile

- Build tomcat application - custom docker image
- Push into docker hub registry
- SSH into Docker host 
    - pull latest tomcat custom image from docker hub registry
    - run the tomcat container