initial java25 version of unicorn-store-spring

Author: Yuriy Bezsonov

apps/unicorn-store-spring-java25/Dockerfile

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+FROM public.ecr.aws/docker/library/maven:3-amazoncorretto-25-al2023 AS builder
+
+RUN yum install -y shadow-utils
+
+COPY store-spring.jar store-spring.jar
+
+RUN groupadd --system spring -g 1000
+RUN adduser spring -u 1000 -g 1000
+
+USER 1000:1000
+
+EXPOSE 8080
+ENTRYPOINT ["java","-jar","-Dserver.port=8080","/store-spring.jar"]

apps/unicorn-store-spring-java25/README.md

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+# Unicorn Store: A Spring Boot REST API for Managing Unicorns
+
+The Unicorn Store is a robust Spring Boot application that provides a RESTful API for managing unicorns. It offers CRUD operations for unicorn entities, integrates with AWS services, and uses PostgreSQL for data persistence.
+
+## Project Description
+
+The Unicorn Store is designed to showcase best practices in building a modern, cloud-native Spring Boot application. It leverages several key technologies and patterns:
+
+- **Spring Boot**: Provides the core framework for building the application, including dependency injection, web services, and data access.
+- **PostgreSQL**: Used as the primary database for storing unicorn information.
+- **AWS SDK**: Integrates with various AWS services, including EventBridge for event publishing, S3 for object storage, and DynamoDB for NoSQL data storage.
+- **Docker**: The application can be containerized for easy deployment and scaling.
+- **Testcontainers**: Enables integration testing with a real PostgreSQL database running in a container.
+
+Key features of the Unicorn Store include:
+
+- RESTful API for creating, reading, updating, and deleting unicorn entities
+- Event publishing to AWS EventBridge for each unicorn operation
+- Comprehensive integration tests using RestAssured and Testcontainers
+- Support for native compilation using GraalVM
+- Configurable deployment options, including Docker and Cloud Native Buildpacks
+
+The application demonstrates how to build a scalable, cloud-ready microservice that can be easily deployed and integrated into a larger ecosystem of services.
+
+## Infrastructure
+
+The Unicorn Store application uses the following key infrastructure components:
+
+1. PostgreSQL Container (for testing):
+   - Type: PostgreSQLContainer
+   - Image: postgres:16.4
+   - Database Name: unicorns
+   - Username: postgres
+   - Password: postgres
+
+This container is defined in the `ContainersConfig` class and is used for integration testing. It ensures that tests run against a real PostgreSQL instance, improving the reliability of the test suite.
+
+Note: In a production environment, you would typically use a managed PostgreSQL service or a dedicated PostgreSQL server instead of a container.