Docker Multi-Stage Builds

This project demonstrates the use of Docker Multi-Stage Builds to create an optimized Docker image for a Spring Boot multi-module application. Multi-Stage Builds allow us to divide the Docker build process into stages, resulting in a smaller and more efficient final image.

In this project, we have defined two build stages:

1. Build Stage (build): This stage is responsible for building the Spring Boot application and generating executable JAR files. It uses a base image with the necessary build tools and dependencies.

2. Run Stage (run): This stage starts with a lightweight base image containing only the JRE (Java Runtime Environment) and copies the built JAR files from the previous stage. It sets up the runtime environment and executes the application.

Building and Running the Docker Image

To build and run the Docker image for this Spring Boot application, follow these steps:

1. Build the Docker image:

docker build -t spring-boot-multi-module-docker .

2. Run the Docker container:

docker run -p 8080:8080 spring-boot-multi-module-docker

The application will be accessible at http://localhost:8080.