Container Registry Card Catalog

A Terminal User Interface (TUI) application for browsing and exploring container registries built with Textual.

Screenshots

Features

🌐 Multi-Registry Support - Connect to multiple container registries simultaneously
🏠 Local Container Support - Browse local podman/docker containers with full metadata
🔐 Authentication Support - Configure credentials for registries (basic, bearer, token auth)
⭐ Monitored Repositories - Priority repositories always fetched first with full tag info and visual indicators
📊 Smart Repository Counts - Display format shows total(monitored) e.g., "1003(3)" for comprehensive status
💾 Persistent Configuration - Registry settings and monitored repositories survive application restarts
📦 Repository Browsing - Navigate through repositories with an intuitive interface
🏷️ Tag Exploration - View and explore container image tags with chronological sorting and real timestamps
📋 Manifest Details - Deep dive into image manifests, layers, and digests (local & remote)
📋 Layer Inspection - View layer information, media types, and sizes
📎 Clipboard Integration - Copy digests to clipboard with platform detection
🔍 Debug Console - Monitor API calls and responses for troubleshooting
🧪 Mock Mode - Test with realistic mock data without real registry connections
🚀 Auto-Loading - Smart pagination for datasets over 1000 items with cursor preservation
🖱️ Double-Click Navigation - Double-click any row to navigate or view details
⌨️ Flexible Navigation - Multiple ways to navigate (keyboard, mouse, shortcuts)

Quick Start

Basic Usage

# Run with mock data (no real registry connections)
python container_registry_card_catalog.py --mock

# Browse local podman containers
python container_registry_card_catalog.py --local podman

# Browse local docker containers  
python container_registry_card_catalog.py --local docker

# Connect to specific registries
python container_registry_card_catalog.py --registry registry.example.com --registry quay.io

# Mix local and remote registries
python container_registry_card_catalog.py --local podman --registry quay.io

# View help
python container_registry_card_catalog.py --help

Navigation

• Arrow Keys: Navigate through lists
• Enter: Select item or view details
• Double-Click: Navigate or view details (same as Enter)
• Escape/Backspace: Go back or close modals
• Ctrl+Q: Quit application (works everywhere)
• Ctrl+D: Open debug console
• C: Configure registry with authentication and monitored repositories (remote registries only)
• R: Refresh current view
• L: Load more items
• Ctrl+X: Purge debug log (debug console only)
• Ctrl+C: Copy digest to clipboard (tag detail modal)
• Ctrl+F: Focus repository filter
• Tab: Toggle focus between filter and table

Modal Navigation

• Page Up/Down: Navigate between items in modals
• Up/Down: Same as Page Up/Down in modals
• Enter: Close modal
• Escape: Close modal

Visual Indicators

• ⭐: Monitored repositories (always appear first with full tag information)
• 📦: Regular catalog repositories
• ❌: Failed/error repositories
• Repository counts: total(monitored) format - e.g., "1003(3)" shows 1003 total repositories with 3 monitored

Installation

Preferred Method: Install from PyPI

Optional: Create a virtual environment first

python -m venv container-registry-env
source container-registry-env/bin/activate  # On Windows: container-registry-env\Scripts\activate

Install the package:

pip install container-registry-card-catalog

Then run:

container-registry-card-catalog --help
container-registry-card-catalog --mock

Alternative: Run from Source

Requirements

• Python 3.8+
• For local container support: podman or docker CLI tools

Clone and Run

git clone <repository-url>
cd container-registry-card-catalog
python container_registry_card_catalog.py --mock

Architecture

The application follows a modular architecture:

container_registry_card_catalog.py   # Main application and registry view
├── registry_client.py               # Registry API client and manager
├── local_container_client.py        # Local podman/docker container support
├── mock_data.py                     # Mock registry data for testing
├── debug_console.py                 # Debug console for API monitoring
├── tags_view.py                     # Tags listing and navigation
├── tag_detail_modal.py              # Detailed tag information modal
└── api_detail_modal.py              # API call details modal

Mock Mode

The application includes comprehensive mock data for testing and development:

• 5 Mock Registries: Public, Quay.io, GCR, Local Dev, Enterprise
• Realistic Repository Data: Common base images and application containers
• Diverse Tag Patterns: Version tags, environment tags, architecture variants
• Manifest Compatibility: Both Docker and OCI manifest formats
• Layered Images: Realistic layer sizes and hierarchies
• Full Configuration Support: Mock mode supports all configuration features including monitored repositories with immediate UI updates
• Accurate Repository Counting: Proper de-duplication logic ensures repository counts match real registry behavior

Registry Support

The application supports multiple registry types:

Remote Registries (Docker Registry HTTP API v2)

✅ Authentication Support - Basic, Bearer, and Token authentication implemented

• Docker Hub - Bearer token authentication
• Quay.io - Token auth with robot accounts
• Google Container Registry (GCR) - OAuth token support
• Amazon Elastic Container Registry (ECR) - AWS token support
• Azure Container Registry (ACR) - Standard authentication
• Harbor - Basic auth and robot accounts
• Self-hosted registries - Generic authentication support

Local Container Runtimes

• Podman - Full support with metadata extraction (tested and verified)
• Docker - Full support with metadata extraction ⚠️ (untested - podman-compatible implementation)
• Automatic detection of container runtime capabilities

API Compatibility

• Docker Registry HTTP API v2: Full support for catalog, tags, and manifest endpoints
• OCI Distribution Specification: Compatible with OCI manifest formats

Development

Adding New Features

1. Follow the existing patterns in the codebase
2. Update mock data in mock_data.py for testing
3. Add appropriate error handling
4. Update this README if needed

Testing

Use mock mode extensively during development:

python container_registry_card_catalog.py --mock

Attribution

This project was generated with AI assistance (Claude by Anthropic) with human guidance and acceptance. All code is provided under the chosen open source license.

AI Attribution (AIA) Notice:

• AIA: EAI Hin R Claude Code v1.0
• Full: AIA Entirely AI, Human-initiated, Reviewed, Claude Code v1.0
• Expanded: This work was entirely AI-generated. AI was prompted for its contributions, or AI assistance was enabled. AI-generated content was reviewed and approved. The following model(s) or application(s) were used: Claude Code.
• Interpretation: https://aiattribution.github.io/interpret-attribution
• More: https://aiattribution.github.io/
• Vibe-Coder: Andrew Potozniak potozniak@redhat.com
• Session Date: 2025-08-15 (Original), 2025-08-16 (Enhanced), 2025-08-27 (Auth & Monitoring)

Licensing

This project is dual-licensed under:

• MIT License - For strict legal certainty
• Vibe-Coder License (VCL-0.1-Experimental) - For those who serve the vibe

See LICENSE and LICENSE-VCL files for full terms.

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

Roadmap

• Authentication support - Basic, bearer, and token authentication ✅
• Search and filtering capabilities - Repository name filtering ✅
• Monitored repositories - Priority repo configuration ✅
• Configuration file support - Persistent monitored repos and settings storage ✅
• Encrypted credential storage - Secure authentication persistence (Phase 2)
• TLS/HTTPS with certificate validation - Currently disabled for compatibility
• Export functionality - Save repository lists, tag information
• Image comparison features - Compare tags and manifests
• Registry state persistence - Remember pagination/position when navigating