Change container name from cnc to cnoc to avoid nginx container conflict

- Update Gitea pipeline to build cnoc:node18, cnoc:node20, cnoc:node22
- Update local-dev.sh to use cnoc container from registry
- Update documentation references from CNC to CNOC
- Update default app package name to cnoc-default-app
- Avoid conflict with existing nginx container (cnc)

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project Overview
 
-Cloud Node Container (CNC) is a Docker-based Node.js hosting environment that supports multiple Node.js versions (18, 20, 22) with Nginx reverse proxy, designed for both local development and production deployment.
+Cloud Node Container (CNOC) is a Docker-based Node.js hosting environment that supports multiple Node.js versions (18, 20, 22) with Nginx reverse proxy, designed for both local development and production deployment.
 
 ## Common Development Commands
 
@@ -26,17 +26,17 @@ Cloud Node Container (CNC) is a Docker-based Node.js hosting environment that su
 ### Building and Testing
 ```bash
 # Build container locally
-docker build -t cloud-node-container:latest .
+docker build -t cnoc:latest .
 
 # Build with specific Node.js version
-docker build --build-arg NODEVER=22 -t cnc:node22 .
+docker build --build-arg NODEVER=22 -t cnoc:node22 .
 
 # Run container manually
 docker run -d -p 80:80 -p 443:443 \
   -e NODEVER=20 -e environment=DEV \
   -e uid=$(id -u) -e user=$(whoami) -e domain=localhost \
   -v"$(pwd)/user":/home/$(whoami) \
-  --name test-container cloud-node-container:latest
+  --name test-container cnoc:latest
 ```
 
 ### Server Deployment