Complete Node.js container implementation with multi-version support

- Add Dockerfile with AlmaLinux 9 base, Nginx reverse proxy, and PM2
- Support Node.js versions 18, 20, 22 with automated installation
- Implement memory-optimized configuration (256MB minimum, 512MB recommended)
- Add Memcached session storage for development environments
- Create comprehensive documentation (README, USER-GUIDE, MEMORY-GUIDE, CLAUDE.md)
- Include example applications (simple website and REST API)
- Add Gitea CI/CD pipeline for automated multi-version builds
- Provide local development script with helper utilities
- Implement health monitoring, log rotation, and backup systems

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

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

scripts/memory-info.sh

@@ -0,0 +1,58 @@
+#!/usr/bin/env bash
+
+echo "=== Cloud Node Container Memory Usage ==="
+echo "Date: $(date)"
+echo ""
+
+echo "=== System Memory ==="
+free -h
+
+echo ""
+echo "=== Process Memory Usage ==="
+echo "Process                    PID    VSZ    RSS   %MEM"
+echo "----------------------------------------"
+
+# Nginx
+nginx_pid=$(pgrep nginx | head -1)
+if [ ! -z "$nginx_pid" ]; then
+    ps -o pid,vsz,rss,%mem,comm -p $nginx_pid | tail -n +2 | while read pid vsz rss mem comm; do
+        printf "%-25s %5s %6s %6s %5s\n" "$comm" "$pid" "${vsz}K" "${rss}K" "$mem%"
+    done
+fi
+
+# Node.js/PM2
+pm2_pids=$(pgrep -f "PM2\|node")
+if [ ! -z "$pm2_pids" ]; then
+    echo "$pm2_pids" | while read pid; do
+        ps -o pid,vsz,rss,%mem,comm -p $pid 2>/dev/null | tail -n +2 | while read pid vsz rss mem comm; do
+            printf "%-25s %5s %6s %6s %5s\n" "$comm" "$pid" "${vsz}K" "${rss}K" "$mem%"
+        done
+    done
+fi
+
+# Memcached
+memcached_pid=$(pgrep memcached)
+if [ ! -z "$memcached_pid" ]; then
+    ps -o pid,vsz,rss,%mem,comm -p $memcached_pid | tail -n +2 | while read pid vsz rss mem comm; do
+        printf "%-25s %5s %6s %6s %5s\n" "$comm" "$pid" "${vsz}K" "${rss}K" "$mem%"
+    done
+fi
+
+echo ""
+echo "=== Container Resource Limits ==="
+if [ -f /sys/fs/cgroup/memory/memory.limit_in_bytes ]; then
+    limit=$(cat /sys/fs/cgroup/memory/memory.limit_in_bytes)
+    if [ $limit -lt 9223372036854775807 ]; then
+        echo "Memory Limit: $((limit / 1024 / 1024))MB"
+    else
+        echo "Memory Limit: No limit set"
+    fi
+fi
+
+echo ""
+echo "=== PM2 Process Info ==="
+if command -v pm2 &> /dev/null; then
+    pm2 list 2>/dev/null | grep -E "(App name|online|stopped|errored)"
+    echo ""
+    pm2 show 0 2>/dev/null | grep -E "(memory|cpu|uptime)" || echo "No PM2 processes running"
+fi