dokku-docker-compose/docs/todo.md

Dokku Docker Compose Plugin - Implementation Plan

Phase 1: Project Setup

• Initialize Git repository
• Set up project structure
• Create basic plugin files
  • plugin.toml - Plugin metadata
  • commands - Main plugin commands
  • functions - Core functions
  • tests - Test directory
• Add README.md with basic usage

Phase 2: Core Functionality

2.1 Basic Plugin Structure - COMPLETED

• Implement plugin initialization
• Create help command
• Add version information
• Set up logging system

2.2 Docker Compose Parser - COMPLETED

• Add YAML parsing with yq
• Validate compose file version
• Extract service definitions
• Handle service dependencies
• Support for volumes and networks
• Environment variable handling
• Port mapping
• Plugin integration for databases v3 compose formats
• Comprehensive test coverage for parser functions
• Simplified deployment test with Nginx container
• Handle YAML anchors and references

2.3 Dokku Plugin Integration - IN PROGRESS

• Create service detection system for Dokku plugins
• Implement plugin installation check
• Add support for core plugins (postgres, redis, etc.)
• Basic service linking with plugins
• Implement fallback to container when plugin is not available
• Update CI to use Node.js 20 LTS
• Map Docker Compose config to Dokku plugin config
• Add support for custom plugin repositories
• Implement plugin version compatibility checks
• Add configuration validation for required plugin options
• Document plugin-specific environment variables

2.4 Dokku App Creation

• Create function to generate valid Dokku app names
• Implement basic app creation
• Add error handling for existing apps
• Implement dry-run mode
• Add app name validation
• Handle subdomain configuration
• Support for custom domains
• Implement app scaling configuration

Phase 3: Service Configuration

3.1 Plugin Service Configuration

• Implement plugin-specific configuration mapping
• Handle plugin version specifications
• Configure resource limits for plugin services
• Set up backup policies for data services
• Implement plugin service health checks
• Add support for plugin-specific environment variables
• Implement health check configuration
• Add backup scheduling options
• Support for plugin-specific resource limits

3.2 Basic Container Service Configuration

• Map service images to Dokku apps
• Handle environment variables
• Configure container resources (CPU, memory)
• Set up build context for Dockerfile builds
• Add support for container health checks
• Implement container restart policies
• Support for container labels and annotations
• Add support for container security options

3.3 Networking

• Create and configure Dokku networks
• Map container ports
• Handle service links and depends_on
• Configure DNS settings
• Support for custom network drivers
• Implement network aliases
• Add support for network-level encryption
• Document DNS configuration options

3.4 Storage

• Create and map volumes
• Handle bind mounts
• Configure volume permissions

Phase 4: Plugin-Specific Features

4.1 Database Plugins

• Handle database initialization
• Support for database extensions
• Implement backup/restore functionality
• Support for read replicas
• Handle database version specifications
• Support for database tuning parameters
• Implement database user management
• Add support for database clustering

4.2 Cache Plugins

• Configure memory limits
• Set up eviction policies
• Implement persistence options
• Support for cache clustering
• Implement cache warming
• Add monitoring integration
• Support for cache invalidation strategies

Recent Improvements (July 2024)

• Simplified deployment test with Nginx container
• Updated CI to use Node.js 20 LTS
• Improved test reliability and error handling
• Added dynamic port allocation for tests
• Enhanced test cleanup procedures

Phase 5: Advanced Features

5.1 Build System

• Support Dockerfile builds
• Handle build arguments
• Support multi-stage builds
• Implement build caching
• Support for build secrets
• Implement build context exclusion patterns
• Add support for build-time variables
• Document build caching strategies

4.2 Health Checks

• Convert Docker healthchecks to Dokku checks
• Configure liveness/readiness probes
• Implement custom health check commands

4.3 Logging and Monitoring

• Set up log aggregation
• Configure monitoring
• Implement log rotation

Phase 6: Testing and Documentation

6.1 Testing

• Unit tests for core functions
• Integration tests with sample compose files
• Test error conditions
• Performance testing
• Add end-to-end test suite
• Implement test coverage reporting
• Add performance benchmarks
• Document test environment setup

6.2 Documentation

• Complete CLI documentation
• Examples directory
• Troubleshooting guide
• Contribution guidelines

Phase 7: Polish and Release

7.1 Error Handling

• Comprehensive error messages
• Graceful rollback on failure
• Input validation

7.2 Security

• Secure handling of sensitive data
• Input sanitization
• Permission checks
• Implement secrets management
• Add support for read-only filesystems
• Document security best practices
• Add security scanning integration

7.3 Performance

• Optimize for large compose files
• Add parallel processing where possible
• Implement progress indicators

Phase 8: Future Enhancements (Post-MVP)

8.4 Documentation

• Create comprehensive API documentation
• Add architecture diagrams
• Document common use cases
• Create video tutorials

8.1 Export Functionality

• Export Dokku apps to compose format
• Support for app updates

8.2 Plugin System

• Extension points for custom service types
• Support for Compose extensions

8.3 CI/CD Integration

• GitHub Actions workflow
• Automated testing
• Release automation
• Add automated dependency updates
• Implement release notes generation
• Add version bump automation
• Document release process

Getting Started

Prerequisites

• Docker
• Docker Compose
• Dokku
• yq (YAML processor)
• Bash 4.0+

Development Setup

# Clone the repository
git clone <repository-url>
cd dokku-docker-compose

# Install development dependencies
make setup

# Run tests
make test

Contributing

1. Fork the repository
2. Create a feature branch
3. Make your changes
4. Add tests
5. Submit a pull request

License

[Specify License]