[EB-9] Modernize Dockerfile base images to Maven 3.9.0 and Eclipse Temurin 17 JRE

[devin-ai-integration]

Ticket: EB-9

Changes Made

This PR modernizes the Docker base images in the Dockerfile as part of infrastructure improvements related to Epic EB-1 (Spring Boot 3.4.9 upgrade).

Specific Updates:

1. Build Stage (Line 6): Updated from maven:3.8.3-openjdk-17 to maven:3.9.0-eclipse-temurin-17
2. Runtime Stage (Line 28): Updated from openjdk:17-alpine to eclipse-temurin:17-jre-alpine

Benefits

• Maven 3.9.0: Provides performance improvements and bug fixes over Maven 3.8.3
• Eclipse Temurin: Industry-recommended OpenJDK distribution with better long-term support and reliability
• JRE-only Runtime: Using -jre-alpine instead of full JDK reduces the final image size and attack surface
• Smaller Runtime Base: Eclipse Temurin 17 JRE Alpine is only 181MB compared to older OpenJDK images

Testing

✅ Docker image builds successfully
✅ Build stage completes with Maven 3.9.0 and Eclipse Temurin 17
✅ Final image size: 234MB
✅ Multi-stage build process preserved
✅ Application JAR correctly copied to runtime stage

Image Size Comparison

• Final application image: 234MB
• Runtime base image (eclipse-temurin:17-jre-alpine): 181MB
• Build base image (maven:3.9.0-eclipse-temurin-17): 529MB (only used during build, not in final image)

The JRE-only runtime approach provides a smaller, more secure production image while maintaining full Java 17 compatibility.

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Link to Devin run: https://app.devin.ai/sessions/bc687391ae194f33937bed131312e76d
Requested by: Alex Peng (alex.peng@windsurf.com) (@alexjpeng)

[devin-ai-integration]

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