Proof of concept: Container management with FastAPI backend

- FastAPI backend with REST API endpoints
- SQLite database for container metadata
- Docker/Podman SDK integration with label filtering
- Frontend: Server creation form and management page
- Container operations: create, list, start, stop, delete
- Single container deployment (nginx + Python + supervisor)
- Support for Docker and Podman (rootless)
- Volume management for persistent data

references/examples/README.md

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+# Docker Compose Examples Reference
+
+This directory contains example Docker Compose configurations for various Minecraft server setups using itzg containers.
+
+## Purpose
+
+These examples serve as:
+- **Reference implementations** for common server configurations
+- **Edge case demonstrations** for complex scenarios
+- **Learning materials** for understanding itzg container capabilities
+- **Templates** for Stronghold to generate similar configurations
+
+## Categories
+
+### Basic Examples
+- Simple vanilla server
+- Basic modded server (Forge/Fabric)
+- Basic plugin server (Paper/Spigot)
+
+### Advanced Examples
+- Multi-server setups
+- Proxy server configurations
+- Modpack installations
+- Custom configurations
+
+### Edge Cases
+- Complex volume mounts
+- Multiple mod sources
+- Environment variable substitution
+- Generic pack installations
+- Custom network configurations
+
+## Source
+
+Examples are typically sourced from:
+- [itzg/docker-minecraft-server GitHub examples](https://github.com/itzg/docker-minecraft-server)
+- Community contributions
+- Documentation examples
+- Real-world use cases
+
+## Usage in Stronghold
+
+Stronghold should:
+1. Analyze these examples to understand configuration patterns
+2. Generate similar configurations dynamically based on user input
+3. Provide presets/templates based on common patterns
+4. Handle edge cases gracefully in the UI
+