<!-- Add the related story/sub-task/bug number, like Resolves#123, or
remove if NA -->
**Related issue:** Resolves#41848
Docs updates: https://github.com/fleetdm/fleet/pull/41868/changes
# Checklist for submitter
- changes not needed since this is a dev environment and test issue
## Testing
- [x] QA'd all new/changed functionality manually
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Tests**
* Enhanced test infrastructure to support environment-variable-based
configuration for SAML, mail, database, and S3 services, enabling more
flexible and dynamic test setups.
* **Chores**
* Updated Docker Compose configuration to use environment variables for
service ports, allowing runtime customization while maintaining backward
compatibility with default values.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Victor Lyuboslavsky
8c2ad7f901