# Debian bootc-image-builder Integration Roadmap

## Project Overview
**STRATEGIC APPROACH**: Hybrid integration using debos components for image creation while building custom container-to-bootable conversion logic.

**CORE INSIGHT**: bootc-image-builder doesn't build from scratch - it converts existing containers to bootable images. debos is excellent for image creation but not for container conversion.

## Phase 1: Analysis & Planning (Weeks 1-2) ✅ COMPLETED

### 1.1 Code Analysis ✅
- [x] Analyzed bootc-image-builder + osbuild relationship
- [x] Understood manifest generation workflow
- [x] Identified debos capabilities and limitations
- [x] Determined integration strategy

### 1.2 Key Findings ✅
- **bootc-image-builder workflow**: Container → Manifest → osbuild → Artifact
- **debos strengths**: Image partitioning, filesystem formatting, bootloader setup
- **debos limitations**: Designed for scratch builds, not container conversion
- **Integration approach**: Use debos for image creation, build custom logic for container conversion

## Phase 2: Core Integration Architecture (Weeks 3-6)

### 2.1 Replace osbuild Backend with debos Components
- [ ] **Image Creation Engine**: Integrate debos `image-partition` action
- [ ] **Filesystem Management**: Use debos filesystem and partition actions
- [ ] **Bootloader Integration**: Leverage debos bootloader configuration
- [ ] **Output Format Support**: qcow2, raw, AMI (defer ISO for later)

### 2.2 Build Custom Container-to-Bootable Logic
- [ ] **Container Extraction**: Extract filesystem from container images
- [ ] **OSTree Integration**: Create OSTree structure from container content
- [ ] **Manifest Generation**: Generate debos-compatible YAML manifests
- [ ] **Boot Configuration**: Set up GRUB, kernel, initramfs

### 2.3 Hybrid Architecture Design
- [ ] **Manifest Generator**: Convert container info to debos actions
- [ ] **Action Orchestrator**: Coordinate debos actions for image creation
- [ ] **Container Processor**: Handle container extraction and preparation
- [ ] **Integration Layer**: Bridge bootc-image-builder CLI with debos backend

## Phase 3: Implementation (Weeks 7-12)

### 3.1 Core Integration Module
- [ ] **`debos_integration.go`**: Main integration logic
- [ ] **`manifest_generator.go`**: Generate debos YAML from container info
- [ ] **`container_processor.go`**: Extract and prepare container content
- [ ] **`image_builder.go`**: Orchestrate debos actions

### 3.2 debos Action Wrappers
- [ ] **`image_partition_wrapper.go`**: Disk image creation
- [ ] **`filesystem_wrapper.go`**: Partition and filesystem setup
- [ ] **`bootloader_wrapper.go`**: GRUB and boot configuration
- [ ] **`ostree_wrapper.go`**: OSTree integration

### 3.3 CLI Integration
- [ ] **Update main.go**: Integrate new backend
- [ ] **Add debos flags**: Configuration options
- [ ] **Maintain compatibility**: Keep existing CLI interface
- [ ] **Add validation**: Ensure proper container input

## Phase 4: Testing & Validation (Weeks 13-16)

### 4.1 Unit Testing
- [ ] **Integration module tests**: Test core logic
- [ ] **Wrapper tests**: Test debos action wrappers
- [ ] **Manifest generation tests**: Test YAML output
- [ ] **Container processing tests**: Test extraction logic

### 4.2 Integration Testing
- [ ] **End-to-end builds**: Test complete workflow
- [ ] **Container compatibility**: Test various container types
- [ ] **Output validation**: Verify qcow2/raw files
- [ ] **Performance testing**: Compare with osbuild

### 4.3 VM Testing
- [ ] **QEMU testing**: Boot generated images
- [ ] **Boot validation**: Ensure images boot correctly
- [ ] **OSTree validation**: Verify OSTree functionality
- [ ] **User experience**: Test basic system operations

## Phase 5: Advanced Features (Weeks 17-20)

### 5.1 ISO Support
- [ ] **Calamares integration**: Installer framework
- [ ] **Live system support**: Bootable ISO creation
- [ ] **Persistence options**: Live system customization
- [ ] **Multi-format support**: DVD, USB, network boot

### 5.2 Cloud Integration
- [ ] **AMI support**: AWS image creation
- [ ] **Cloud-init integration**: Instance initialization
- [ ] **Multi-region support**: Geographic distribution
- [ ] **Automation**: CI/CD pipeline integration

### 5.3 Advanced Customization
- [ ] **Blueprint support**: Configuration management
- [ ] **Plugin system**: Extensible architecture
- [ ] **Multi-architecture**: ARM64, ARMHF support
- [ ] **Security features**: TPM, measured boot

## Phase 6: Documentation & Release (Weeks 21-24)

### 6.1 Documentation
- [ ] **User guide**: Complete usage documentation
- [ ] **Developer guide**: Integration and extension
- [ ] **API reference**: Complete API documentation
- [ ] **Examples**: Sample configurations and use cases

### 6.2 Community & Release
- [ ] **Package preparation**: Debian packaging
- [ ] **Community engagement**: Debian community outreach
- [ ] **Release management**: Version 1.0 preparation
- [ ] **Long-term support**: Maintenance planning

## Technical Architecture

### Integration Points
```
bootc-image-builder CLI
         ↓
   Manifest Generator
         ↓
   debos Actions
         ↓
   Image Output
```

### Key Components
- **Container Processor**: Extract and prepare container content
- **Manifest Generator**: Create debos-compatible YAML
- **Action Orchestrator**: Execute debos actions in sequence
- **Output Handler**: Manage final image creation

### debos Actions Used
- **`image-partition`**: Create disk images with partitions
- **`filesystem-deploy`**: Format and populate filesystems
- **`ostree-commit`**: Manage OSTree repositories
- **`pack`**: Create final image files

## Success Metrics

### Technical Goals
- **Container compatibility**: 100% compatibility with existing containers
- **Output quality**: Bootable images that work in QEMU/VMs
- **Performance**: Build times within 2x of osbuild (acceptable trade-off)
- **Reliability**: 95%+ success rate for valid inputs

### Adoption Goals
- **Community**: 2+ contributors by Phase 6
- **Usage**: 1+ downstream project adoption
- **Documentation**: Complete user and developer guides
- **Feedback**: Positive reception from bootc community

## Risk Mitigation

### Technical Risks
- **debos integration complexity**: Use proven debos actions, build custom logic
- **Container compatibility**: Extensive testing with various container types
- **Performance overhead**: Accept reasonable trade-offs for complexity reduction
- **Maintenance burden**: Single backend choice reduces complexity

### Resource Risks
- **Development time**: 6-8 months realistic timeline
- **Testing complexity**: Focus on major use cases first
- **Community engagement**: Start with bootc users, expand gradually

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**Last Updated**: August 11, 2025  
**Next Review**: Weekly during active development  
**Project Lead**: [Your Name]  
**Repository**: [Fork URL when created]
