Self-hosted n8n

mkdir ~/n8n && cd ~/n8n
mkdir n8n_data db_data caddy

version: '3.8'

services:
  postgres:
    image: postgres:16
    restart: always
    environment:
      POSTGRES_DB: n8n
      POSTGRES_PASSWORD: your_secure_db_password
      POSTGRES_USER: n8n
      POSTGRES_NON_ROOT_USER: n8n
      POSTGRES_NON_ROOT_PASSWORD: your_secure_db_password
    volumes:
      - db_data:/var/lib/postgresql/data
    healthcheck:
      test: ['CMD-SHELL', 'pg_isready -h localhost -U n8n -d n8n']
      interval: 5s
      timeout: 5s
      retries: 10

  redis:
    image: redis:7-alpine
    restart: always
    healthcheck:
      test: ['CMD-SHELL', 'redis-cli ping || exit 1']
      interval: 5s
      timeout: 3s
      retries: 5

  n8n:
    image: docker.n8n.io/n8nio/n8n:latest
    restart: always
    environment:
      # Database Configuration
      - DB_TYPE=postgresdb
      - DB_POSTGRESDB_HOST=postgres
      - DB_POSTGRESDB_PORT=5432
      - DB_POSTGRESDB_DATABASE=n8n
      - DB_POSTGRESDB_USER=n8n
      - DB_POSTGRESDB_PASSWORD=your_secure_db_password

      # Basic Configuration
      - N8N_HOST=your-domain.com
      - N8N_PORT=5678
      - N8N_PROTOCOL=https
      - WEBHOOK_URL=https://your-domain.com/
      - GENERIC_TIMEZONE=UTC

      # Security
      - N8N_BASIC_AUTH_ACTIVE=true
      - N8N_BASIC_AUTH_USER=admin
      - N8N_BASIC_AUTH_PASSWORD=your_secure_admin_password
      - N8N_SECURE_COOKIE=true

      # Performance
      - EXECUTIONS_PROCESS=main
      - N8N_ENCRYPTION_KEY=your_32_char_encryption_key_here
    volumes:
      - n8n_data:/home/node/.n8n
    ports:
      - "127.0.0.1:5678:5678"
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    healthcheck:
      test: ['CMD-SHELL', 'wget --no-verbose --tries=1 --spider http://localhost:5678/healthz || exit 1']
      interval: 5s
      timeout: 5s
      retries: 3

  caddy:
    image: caddy:alpine
    restart: always
    ports:
      - "80:80"
      - "443:443"
    volumes:
      - ./caddy/Caddyfile:/etc/caddy/Caddyfile
      - caddy_data:/data
    depends_on:
      - n8n

volumes:
  n8n_data:
  db_data:
  caddy_data:

your-domain.com {
    reverse_proxy n8n:5678
    encode gzip
    header {
        Referrer-Policy no-referrer-when-downgrade
    }
}

# HTTP Request Node Setup:
Method: POST / GET / PUT / DELETE
URL: https://api.example.com/endpoint
Headers:
  Authorization: Bearer {{$credentials.api_token}}
  Content-Type: application/json
Body:
  { "data": "{{$json.input_field}}" }

# Install additional nodes for:
n8n-nodes-aws        # AWS services (S3, Lambda, SQS)
n8n-nodes-pushbullet # Push notifications
n8n-nodes-youtube    # YouTube management
n8n-nodes-pdf        # PDF manipulation
n8n-nodes-crypto     # Cryptocurrency data

# AI Agent Workflow:
Webhook Trigger
  -> LangChain Agent Node (tools: web search, calculator)
  -> OpenAI Chat Node (GPT-4)
  -> Slack / Email Response