Add container_name to each Docker service

[grantfitzsimmons]

Fixes #7027

Also removes the version attribute as we've been seeing this for years now:

WARN[0000] /specify7/docker-compose.yml: the attribute `version` is obsolete, it will be ignored, please remove it to avoid potential confusion 

Requires little testing, but a developer or two checking this would be appreciated.

Testing instructions

• Run docker compose up
• See that all containers use the container_name set for each service after running docker ps

[Copilot]

Pull Request Overview

This PR removes the deprecated Compose version attribute and adds explicit container_name entries to each Docker service for clearer container identification.

• Removed the obsolete version key from the Compose file
• Added container_name to every service for consistent naming

Comments suppressed due to low confidence (1)

docker-compose.yml:69

• The container_name "worker" for the specify7-worker service is too generic and inconsistent with the service name. Consider renaming it to "specify7-worker" to match the service and prevent potential container name collisions.

    container_name: worker