Running with Docker

This project includes a multi-stage Dockerfile and a Docker Compose setup for containerized development and deployment.

Project-Specific Docker Requirements

• Base Image: Uses eclipse-temurin:17-jdk for building and eclipse-temurin:17-jre for running (Java 17 required).
• Build Tool: Uses the Maven Wrapper (mvnw) included in the project for building the application.
• Ports: The application exposes port 8080 (default for Spring Boot).

Environment Variables

• No required environment variables are set by default in the Dockerfile or Compose file.
• If you need to provide environment variables, you can uncomment and use the env_file section in docker-compose.yml.

Build and Run Instructions

1. Build and start the application:

   docker compose up --build

   This will build the image using the provided Dockerfile and start the java-app service.

2. Access the application:

   • The application will be available at http://localhost:8080

Special Configuration

• The Dockerfile creates a non-root user (appuser) for running the application securely.
• JVM options are set for container awareness: JAVA_OPTS="-XX:MaxRAMPercentage=80.0" (can be overridden if needed).
• If your application requires additional services (e.g., a database), you can extend the docker-compose.yml by uncommenting and configuring the relevant sections.

Exposed Ports

• java-app: 8080 (host) → 8080 (container)

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If you add external dependencies (like a database), update the docker-compose.yml and this section accordingly.