FirstMate's changes for - Docker file changes

[firstmatebot]

Important

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Changes Made

• Updated the Dockerfile to use Node.js version 14-alpine instead of 19-alpine.
• Implemented multi-stage builds to optimize image size and security.
• Set the environment variable PORT to 8080.
• Configured WORKDIR to /usr/src/app.
• Created a non-root user for enhanced security.

Remaining Tasks

• Ensure that all application dependencies are compatible with Node.js 14-alpine.
• Test the application thoroughly to confirm that it runs as expected in the new Docker environment.

Double Check Before Merging

• Verify that the application functions correctly with the new user permissions.
• Confirm that the multi-stage build is working as intended and that the final image size is optimized.