🔌 Add Docker API endpoints for container management

app/api/docker/containers/[id]/restart/route.js

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+import { NextResponse } from 'next/server';
+
+export async function POST(request, { params }) {
+  try {
+    const Docker = require('dockerode');
+    const docker = new Docker({ socketPath: '/var/run/docker.sock' });
+    const container = docker.getContainer(params.id);
+    await container.restart({ t: 10 }); // 10 second timeout
+    
+    return NextResponse.json({ 
+      success: true, 
+      message: 'Container restarted successfully' 
+    });
+  } catch (error) {
+    console.error('Failed to restart container:', error);
+    return NextResponse.json(
+      { error: error.message || 'Failed to restart container' },
+      { status: 500 }
+    );
+  }
+}

app/api/docker/containers/[id]/start/route.js

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+import { NextResponse } from 'next/server';
+
+export async function POST(request, { params }) {
+  try {
+    const Docker = require('dockerode');
+    const docker = new Docker({ socketPath: '/var/run/docker.sock' });
+    const container = docker.getContainer(params.id);
+    await container.start();
+    
+    return NextResponse.json({ 
+      success: true, 
+      message: 'Container started successfully' 
+    });
+  } catch (error) {
+    console.error('Failed to start container:', error);
+    return NextResponse.json(
+      { error: error.message || 'Failed to start container' },
+      { status: 500 }
+    );
+  }
+}

app/api/docker/containers/[id]/stats/route.js

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+import { NextResponse } from 'next/server';
+
+export async function GET(request, { params }) {
+  try {
+    const Docker = require('dockerode');
+    const docker = new Docker({ socketPath: '/var/run/docker.sock' });
+    const container = docker.getContainer(params.id);
+    const stats = await container.stats({ stream: false });
+    
+    // Calculate CPU and memory percentages
+    const cpuPercent = calculateCPUPercent(stats);
+    const memoryUsage = stats.memory_stats.usage || 0;
+    const memoryLimit = stats.memory_stats.limit || 0;
+    
+    return NextResponse.json({
+      cpu: cpuPercent,
+      memory: Math.round(memoryUsage / 1024 / 1024), // Convert to MB
+      memoryLimit: Math.round(memoryLimit / 1024 / 1024)
+    });
+  } catch (error) {
+    console.error('Failed to get container stats:', error);
+    return NextResponse.json(
+      { error: error.message || 'Failed to get container stats' },
+      { status: 500 }
+    );
+  }
+}
+
+function calculateCPUPercent(stats) {
+  const cpuDelta = stats.cpu_stats.cpu_usage.total_usage - 
+                   (stats.precpu_stats?.cpu_usage?.total_usage || 0);
+  const systemDelta = stats.cpu_stats.system_cpu_usage - 
+                      (stats.precpu_stats?.system_cpu_usage || 0);
+  
+  if (systemDelta > 0 && cpuDelta > 0) {
+    const cpuPercent = (cpuDelta / systemDelta) * 
+                       (stats.cpu_stats.online_cpus || 1) * 100;
+    return Math.round(cpuPercent * 100) / 100;
+  }
+  return 0;
+}

app/api/docker/containers/[id]/stop/route.js

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+import { NextResponse } from 'next/server';
+
+export async function POST(request, { params }) {
+  try {
+    const Docker = require('dockerode');
+    const docker = new Docker({ socketPath: '/var/run/docker.sock' });
+    const container = docker.getContainer(params.id);
+    await container.stop({ t: 10 }); // 10 second timeout
+    
+    return NextResponse.json({ 
+      success: true, 
+      message: 'Container stopped successfully' 
+    });
+  } catch (error) {
+    console.error('Failed to stop container:', error);
+    return NextResponse.json(
+      { error: error.message || 'Failed to stop container' },
+      { status: 500 }
+    );
+  }
+}