Remove redundant port exposes from docker-compose.yml

[sharma-shanu]

This PR :-

• Removes redundant port exposes for redis and postgres
• Adds service name to avoid naming clashes for docker networks and containers.

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[sharma-shanu]

The port exposed by docker-compose are already being exposed by the base image.

Reference :-

https://github.com/docker-library/postgres/blob/c86568af4a6861cb30b8f1b736b0868a3129bdd6/16/bookworm/Dockerfile#L221

https://github.com/docker-library/redis/blob/76c393fd8ac537201fe4bc4f200b4b5daee03f24/7.2/debian/Dockerfile#L151