Revert docker-compose.yml to bitnami/mongodb:6.0.13

[S-S-T]

Hotfix: Restore docker-compose.yml to correct MongoDB image and comments

Problem

The merge of PR #408 (predisk-scanning-1756) inadvertently changed the MongoDB image from bitnami/mongodb:6.0.13 to mongo:6.0.4 and removed two useful comment blocks from docker-compose.yml.

Changes

• Reverted MongoDB image back to bitnami/mongodb:6.0.13
• Removed container_name: mage-db (was not in develop)
• Restored comment block explaining how to enable the MongoDB port for local client access
• Restored comment block for the optional TLS reverse proxy configuration

Impact

• No functional code changes
• No effect on attachment scanning work
• Restores docker-compose.yml to its correct pre-merge state

[ryanslatten]

we will want to use the official mongo image as bitnami no longer supports older images. We also want the patched version 6.0.27. The image name should be mongo:6.0.27

[S-S-T]

Changed image name to be mongo:6.0.27 in the docker-compose.yml file