diff --git a/apps/api/prisma/seed.ts b/apps/api/prisma/seed.ts
new file mode 100644
index 0000000..4db93b0
--- /dev/null
+++ b/apps/api/prisma/seed.ts
@@ -0,0 +1,202 @@
+import { PrismaClient } from '@prisma/client';
+import bcrypt from 'bcryptjs';
+
+const prisma = new PrismaClient();
+
+async function main() {
+  console.log('🌱 Seeding database...');
+
+  // Create demo tenant
+  const schemaName = 'tenant_ede123456ab1';
+
+  const tenant = await prisma.tenant.upsert({
+    where: { rfc: 'EDE123456AB1' },
+    update: {},
+    create: {
+      nombre: 'Empresa Demo SA de CV',
+      rfc: 'EDE123456AB1',
+      plan: 'professional',
+      schemaName,
+      cfdiLimit: 2000,
+      usersLimit: 10,
+    },
+  });
+
+  console.log('✅ Tenant created:', tenant.nombre);
+
+  // Create demo users
+  const passwordHash = await bcrypt.hash('demo123', 12);
+
+  const users = [
+    { email: 'admin@demo.com', nombre: 'Admin Demo', role: 'admin' as const },
+    { email: 'contador@demo.com', nombre: 'Contador Demo', role: 'contador' as const },
+    { email: 'visor@demo.com', nombre: 'Visor Demo', role: 'visor' as const },
+  ];
+
+  for (const userData of users) {
+    const user = await prisma.user.upsert({
+      where: { email: userData.email },
+      update: {},
+      create: {
+        tenantId: tenant.id,
+        email: userData.email,
+        passwordHash,
+        nombre: userData.nombre,
+        role: userData.role,
+      },
+    });
+    console.log(`✅ User created: ${user.email} (${user.role})`);
+  }
+
+  // Create tenant schema
+  await prisma.$executeRawUnsafe(`CREATE SCHEMA IF NOT EXISTS "${schemaName}"`);
+
+  // Create tables in tenant schema
+  await prisma.$executeRawUnsafe(`
+    CREATE TABLE IF NOT EXISTS "${schemaName}"."cfdis" (
+      id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+      uuid_fiscal VARCHAR(36) UNIQUE NOT NULL,
+      tipo VARCHAR(20) NOT NULL,
+      serie VARCHAR(25),
+      folio VARCHAR(40),
+      fecha_emision TIMESTAMP NOT NULL,
+      fecha_timbrado TIMESTAMP NOT NULL,
+      rfc_emisor VARCHAR(13) NOT NULL,
+      nombre_emisor VARCHAR(300) NOT NULL,
+      rfc_receptor VARCHAR(13) NOT NULL,
+      nombre_receptor VARCHAR(300) NOT NULL,
+      subtotal DECIMAL(18,2) NOT NULL,
+      descuento DECIMAL(18,2) DEFAULT 0,
+      iva DECIMAL(18,2) DEFAULT 0,
+      isr_retenido DECIMAL(18,2) DEFAULT 0,
+      iva_retenido DECIMAL(18,2) DEFAULT 0,
+      total DECIMAL(18,2) NOT NULL,
+      moneda VARCHAR(3) DEFAULT 'MXN',
+      tipo_cambio DECIMAL(10,4) DEFAULT 1,
+      metodo_pago VARCHAR(3),
+      forma_pago VARCHAR(2),
+      uso_cfdi VARCHAR(4),
+      estado VARCHAR(20) DEFAULT 'vigente',
+      xml_url TEXT,
+      pdf_url TEXT,
+      created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    )
+  `);
+
+  // Create IVA monthly table
+  await prisma.$executeRawUnsafe(`
+    CREATE TABLE IF NOT EXISTS "${schemaName}"."iva_mensual" (
+      id SERIAL PRIMARY KEY,
+      año INT NOT NULL,
+      mes INT NOT NULL,
+      iva_trasladado DECIMAL(18,2) NOT NULL,
+      iva_acreditable DECIMAL(18,2) NOT NULL,
+      iva_retenido DECIMAL(18,2) DEFAULT 0,
+      resultado DECIMAL(18,2) NOT NULL,
+      acumulado DECIMAL(18,2) NOT NULL,
+      estado VARCHAR(20) DEFAULT 'pendiente',
+      fecha_declaracion TIMESTAMP,
+      UNIQUE(año, mes)
+    )
+  `);
+
+  // Insert demo CFDIs
+  const cfdiTypes = ['ingreso', 'egreso'];
+  const rfcs = ['XAXX010101000', 'MEXX020202000', 'AAXX030303000', 'BBXX040404000'];
+  const nombres = ['Cliente Demo SA', 'Proveedor ABC', 'Servicios XYZ', 'Materiales 123'];
+
+  for (let i = 0; i < 50; i++) {
+    const tipo = cfdiTypes[i % 2];
+    const rfcIndex = i % 4;
+    const subtotal = Math.floor(Math.random() * 50000) + 1000;
+    const iva = subtotal * 0.16;
+    const total = subtotal + iva;
+
+    await prisma.$executeRawUnsafe(`
+      INSERT INTO "${schemaName}"."cfdis"
+      (uuid_fiscal, tipo, serie, folio, fecha_emision, fecha_timbrado,
+       rfc_emisor, nombre_emisor, rfc_receptor, nombre_receptor,
+       subtotal, iva, total, estado)
+      VALUES (
+        '${crypto.randomUUID()}',
+        '${tipo}',
+        'A',
+        '${1000 + i}',
+        NOW() - INTERVAL '${Math.floor(Math.random() * 180)} days',
+        NOW() - INTERVAL '${Math.floor(Math.random() * 180)} days',
+        '${tipo === 'ingreso' ? 'EDE123456AB1' : rfcs[rfcIndex]}',
+        '${tipo === 'ingreso' ? 'Empresa Demo SA de CV' : nombres[rfcIndex]}',
+        '${tipo === 'egreso' ? 'EDE123456AB1' : rfcs[rfcIndex]}',
+        '${tipo === 'egreso' ? 'Empresa Demo SA de CV' : nombres[rfcIndex]}',
+        ${subtotal},
+        ${iva},
+        ${total},
+        'vigente'
+      )
+      ON CONFLICT (uuid_fiscal) DO NOTHING
+    `);
+  }
+
+  console.log('✅ Demo CFDIs created');
+
+  // Create IVA monthly records
+  let acumulado = 0;
+
+  for (let mes = 1; mes <= 6; mes++) {
+    const trasladado = Math.floor(Math.random() * 100000) + 150000;
+    const acreditable = Math.floor(Math.random() * 80000) + 120000;
+    const resultado = trasladado - acreditable;
+    acumulado += resultado;
+
+    await prisma.$executeRawUnsafe(`
+      INSERT INTO "${schemaName}"."iva_mensual"
+      (año, mes, iva_trasladado, iva_acreditable, resultado, acumulado, estado)
+      VALUES (2024, ${mes}, ${trasladado}, ${acreditable}, ${resultado}, ${acumulado},
+              '${mes <= 4 ? 'declarado' : 'pendiente'}')
+      ON CONFLICT (año, mes) DO NOTHING
+    `);
+  }
+
+  console.log('✅ IVA monthly records created');
+
+  // Create alerts table
+  await prisma.$executeRawUnsafe(`
+    CREATE TABLE IF NOT EXISTS "${schemaName}"."alertas" (
+      id SERIAL PRIMARY KEY,
+      tipo VARCHAR(50) NOT NULL,
+      titulo VARCHAR(200) NOT NULL,
+      mensaje TEXT NOT NULL,
+      prioridad VARCHAR(20) DEFAULT 'media',
+      fecha_vencimiento TIMESTAMP,
+      leida BOOLEAN DEFAULT FALSE,
+      resuelta BOOLEAN DEFAULT FALSE,
+      created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    )
+  `);
+
+  await prisma.$executeRawUnsafe(`
+    INSERT INTO "${schemaName}"."alertas" (tipo, titulo, mensaje, prioridad, fecha_vencimiento)
+    VALUES
+      ('iva_favor', 'IVA a Favor Disponible', 'Tienes $43,582.40 de IVA a favor acumulado', 'media', NULL),
+      ('declaracion', 'Declaración Mensual', 'La declaración mensual de IVA/ISR vence el 17 de febrero', 'alta', NOW() + INTERVAL '5 days'),
+      ('discrepancia', 'CFDI con Discrepancia', 'Se encontraron 12 facturas con discrepancias', 'alta', NULL)
+    ON CONFLICT DO NOTHING
+  `);
+
+  console.log('✅ Alerts created');
+
+  console.log('🎉 Seed completed successfully!');
+  console.log('\n📝 Demo credentials:');
+  console.log('   Admin: admin@demo.com / demo123');
+  console.log('   Contador: contador@demo.com / demo123');
+  console.log('   Visor: visor@demo.com / demo123');
+}
+
+main()
+  .catch((e) => {
+    console.error('Error seeding database:', e);
+    process.exit(1);
+  })
+  .finally(async () => {
+    await prisma.$disconnect();
+  });
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..5d07efa
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,53 @@
+version: '3.8'
+
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: horux360-db
+    environment:
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: postgres
+      POSTGRES_DB: horux360
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  api:
+    build:
+      context: .
+      dockerfile: apps/api/Dockerfile
+    container_name: horux360-api
+    environment:
+      NODE_ENV: development
+      PORT: 4000
+      DATABASE_URL: postgresql://postgres:postgres@postgres:5432/horux360?schema=public
+      JWT_SECRET: your-super-secret-jwt-key-min-32-chars-long-for-development
+      JWT_EXPIRES_IN: 15m
+      JWT_REFRESH_EXPIRES_IN: 7d
+      CORS_ORIGIN: http://localhost:3000
+    ports:
+      - "4000:4000"
+    depends_on:
+      postgres:
+        condition: service_healthy
+
+  web:
+    build:
+      context: .
+      dockerfile: apps/web/Dockerfile
+    container_name: horux360-web
+    environment:
+      NEXT_PUBLIC_API_URL: http://localhost:4000/api
+    ports:
+      - "3000:3000"
+    depends_on:
+      - api
+
+volumes:
+  postgres_data: