style: removed version & formatting

[NotYuSheng]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @NotYuSheng, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces minor stylistic and configuration adjustments to the docker-compose.yml file. The changes aim to streamline the Docker Compose setup by removing an explicit version declaration and enhancing the file's readability through a small formatting improvement.

Highlights

• Docker Compose Configuration: Removed the explicit version key (version: "3.9") from docker-compose.yml. This allows Docker Compose to automatically use the latest supported Compose file format version, simplifying the configuration.
• Code Formatting: Improved readability within docker-compose.yml by adding a blank line between the ports section of the backend service and the volumes declaration. This enhances visual separation of logical blocks.

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[gemini-code-assist]

Code Review

This pull request focuses on stylistic improvements to the docker-compose.yml file. The removal of the top-level version key is a good practice, as this property is deprecated and no longer needed with modern versions of Docker Compose. The added newline improves formatting consistency within the file. Both changes are positive and improve the maintainability of the configuration. The changes look good and are ready to be merged.