Replace mvn clean install with mvn clean package in springboot.instructions.md

[kartikdhiman]

Pull Request Checklist

• I have read and followed the CONTRIBUTING.md guidelines.
• My contribution adds a new instruction, prompt, or chat mode file in the correct directory.
• The file follows the required naming convention.
• The content is clearly structured and follows the example format.
• I have tested my instructions, prompt, or chat mode with GitHub Copilot.
• I have run node update-readme.js and verified that README.md is up to date.

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Description

Replace mvn clean install with mvn clean package in springboot.instructions.md. This is a docs-only change to recommend building and running tests without installing artifacts to the local Maven repository.

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Type of Contribution

• New instruction file.
• New prompt file.
• New chat mode file.
• Other (docs update: change build verification command):

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Additional Notes

• File edited: springboot.instructions.md - line 56.
• Reason: reduce side effects for readers who only need to verify build/tests; keep install optional for consumers who need artifacts in ~/.m2.
• Validation: run mvn clean package to confirm build and tests succeed. No code changes or CI updates expected.

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By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

[Copilot]

Pull Request Overview

This PR updates the Spring Boot instruction file to recommend mvn clean package instead of mvn clean install for build verification. The change reduces unnecessary side effects by avoiding local repository installation when only build and test verification is needed.

• Updates Maven build command recommendation from install to package