Description of Changes

Please provide a summary of the changes, including:

What was changed:

Refactored path constructions in multiple classes (e.g., SPDFApplication.java, InstallationPathConfig.java, RuntimePathConfig.java) to use Java NIO’s Paths.get() and Path.of() instead of manual string concatenation.

Why the change was made:

To improve code readability, maintainability, and robustness by leveraging modern Java NIO utilities.
To ensure better portability across different operating systems by avoiding hardcoded file separators.

Challenges encountered:

Maintaining backward compatibility while transitioning from manual string concatenation to using Paths for file path construction.
Ensuring that the refactored path resolution works consistently across all supported environments (Windows, macOS, Linux, and Docker).

@Frooodle can you check the docker path /.dockerenv?

Checklist

[ ] I have updated relevant docs on Stirling-PDF's doc repo (if functionality has heavily changed)
[ ] I have read the section Add New Translation Tags (for new translation tags only)

[ ] Screenshots or videos demonstrating the UI changes are attached (e.g., as comments or direct attachments in the PR)

[ ] I have tested my changes locally. Refer to the Testing Guide for more details.

Feb 23 '25 22:02 Ludy87

/deploypr

Feb 23 '25 22:02 Frooodle

Your PR has been deployed for testing!

This deployment will be automatically cleaned up when the PR is closed.

Feb 23 '25 22:02 github-actions[bot]

/deploypr

Feb 23 '25 23:02 Ludy87

Your PR has been deployed for testing!

This deployment will be automatically cleaned up when the PR is closed.

Feb 23 '25 23:02 github-actions[bot]