rahulvaish/Docker-Java: Understanding Docker with Java · GitHub

This repository contains methods to Dockerize Java Projects.

• Dockerizing HelloWorld Java Application
• Dockerizing SpringBoot Application
• SpringBoot Inter Container Communication
• SpringBoot-MySQL Container Communication
• SpringBoot-DockerCompose
• SpringBoot-DockerVolume

• Dockerizing HelloWorld Java Application

  This example illustrates how to Dockerize a simple Java Project. [Source Code]

  
  • Now, tag your image and push on Docker Hub. Execute the below commands:
  • docker login --username=rahulvaish
  • Enter your password (on prompt)
  • docker tag helloworldjavadocker rahulvaish/helloworldjavadocker
  • docker push rahulvaish/helloworldjavadocker

• Dockerizing SpringBoot Application

  This example illustrates how to Dockerize a SpringBoot Project. [Source Code]

  
  • Now, tag your image and push on Docker Hub. Execute the below commands:
  • docker login --username=rahulvaish
  • Enter your password (on prompt)
  • docker tag springbootdocker rahulvaish/springbootdocker
  • docker push rahulvaish/springbootdocker

• SpringBoot Inter Container Communication

  This example illustrates how SpringBoot Docker containers communicate. [Source Code]

  • Create a private network
    
  • Build then Start first container under private network:
  • Build then Start second container under same private network:
    
  • Test - Making hit to second container which internally hits first container:

• SpringBoot-MySQL Container Communication

  This example illustrates how SpringBoot Docker container communicates with MySQL container. [Source Code]

  • Create a private network
  • Start the MySQL container:
    

    docker container run --network springbootmysqlntw --name mysqlcontainer  -d -p 3306:3306 -e MYSQL_DATABASE=mysqldb -e MYSQL_ROOT_PASSWORD=root mysql
    

  • Create Table & Insert some Data:
    
  • Build & Start SpringBoot Application (on same private network) NOTE: We are not hardcoding DB's IP. Instead using container's name.

  ---

• SpringBoot-DockerCompose

  This example illustrates how Docker Compose works with two springBoot Projects.Here, CalculatorService is Producer and CalculatorServiceClient is Consumer [Source Code]

  • First prepare the docker images of both CalculatorService and CalculatorServiceClient

    docker build -f Dockerfile -t calculatorservice . 
    docker build -f Dockerfile -t calculatorserviceclient .  
    

    

• SpringBoot-DockerVolume

  This example illustrates how Docker Volumes - Mount Point works with SpringBoot Project.