- Added `requiredPort` property to `ServiceApplicationView` to track the required port for services.
- Introduced modal confirmation for removing required ports, including methods to confirm or cancel the action.
- Enhanced `Service` model with `getRequiredPort` and `requiresPort` methods to retrieve port information from service templates.
- Implemented `extractPortFromUrl` method in `ServiceApplication` to extract port from FQDN URLs.
- Updated frontend views to display warnings when required ports are missing from domains.
- Created unit tests for service port validation and extraction logic, ensuring correct behavior for various scenarios.
- Added feature tests for Livewire component handling of domain submissions with required ports.
- Preserve empty string environment variables instead of converting to null
Empty strings and null have different semantics in Docker Compose:
* Empty string (VAR: ""): Variable is set to "" in container (e.g., HTTP_PROXY="" means "no proxy")
* Null (VAR: null): Variable is unset/removed from container environment
- Remove empty top-level sections (volumes, configs, secrets) from generated compose files
These sections now only appear when they contain actual content, following Docker Compose best practices
- Add safety check for missing volumes in validateComposeFile to prevent iteration errors
- Add comprehensive unit tests for both fixes
Fixes#7126