feat: Add comprehensive WordPress example with multi-container deployment and documentation

docs/roadmap.md

@@ -57,12 +57,12 @@ Comprehensive progression of Kubernetes examples designed to teach MyceliumCloud
 - **Template**: Same efficient pattern
 - **Key Concepts**: Persistent volumes, databases, data persistence
 
-#### 8. WordPress
+#### 8. WordPress ✅
 - **Difficulty**: ⭐⭐⭐ Hard
-- **Status**: 📋 Planned
-- **Learning Focus**: Multi-container applications, CMS deployment
-- **Template**: Same efficient pattern
-- **Key Concepts**: Multi-container apps, database integration, CMS deployment
+- **Status**: ✅ **COMPLETED**
+- **Learning Focus**: Multi-container applications, CMS deployment, database integration
+- **Template**: Enhanced pattern with `wordpress.md` + `wordpress-deployment.yaml` + `wordpress-service.yaml` + `wordpress-configmap.yaml`
+- **Key Concepts**: Multi-container pods, database persistence, init containers, ConfigMaps, CMS deployment, persistent volumes
 
 #### 9. Node.js API
 - **Difficulty**: ⭐⭐⭐ Hard
@@ -199,10 +199,11 @@ Each example includes:
 - **Nginx Mycelium IPv6** - Peer-to-peer IPv6 web hosting (Completed)
 - **Redis Cache** - Data caching services (Completed)
 - **Nginx NodePort Website** - Standard K8s NodePort services with multi-replica scaling (Completed)
+- **WordPress** - Multi-container CMS with MariaDB database (Completed)
 
 ### Next Planned Example
 1. **PostgreSQL Database** - Stateful database deployment
-   - Copy nginx-nodeport template structure
+   - Copy wordpress template structure (multi-container pattern)
    - Adapt for PostgreSQL database needs
    - Include persistent volume management
    - Test database connectivity and data persistence