add initial docker compose setup

.env

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+POSTGRES_USER=root
+POSTGRES_PASSWORD=password
+POSTGRES_DB=n8n

docker-compose.yml

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+version: '3.8'
+volumes:
+  n8n_storage:
+  postgres_storage:
+  ollama_storage:
+  qdrant_storage:
+
+networks:
+  n8n:
+
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: postgres
+    networks: ['n8n']
+    restart: unless-stopped
+    environment:
+      - POSTGRES_USER
+      - POSTGRES_PASSWORD
+      - POSTGRES_DB
+    volumes:
+      - postgres_storage:/var/lib/postgresql/data
+    ports:
+      - 5432:5432
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -h localhost -U ${POSTGRES_USER} -d ${POSTGRES_DB}']
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
+  n8n:
+    image: n8nio/n8n:latest
+    container_name: n8n
+    networks: ['n8n']
+    restart: unless-stopped
+    environment:
+      - DB_TYPE=postgresdb
+      - DB_POSTGRESDB_HOST=postgres
+      - DB_POSTGRESDB_USER=${POSTGRES_USER}
+      - DB_POSTGRESDB_PASSWORD=${POSTGRES_DB}
+    ports:
+      - 5678:5678
+    links:
+      - postgres
+    volumes:
+      - n8n_storage:/home/node/.n8n
+    depends_on:
+      postgres:
+        condition: service_healthy
+
+  ollama:
+    image: ollama/ollama:latest
+    container_name: ollama
+    networks: ['n8n']
+    restart: unless-stopped
+    ports:
+      - 11434:11434
+    volumes:
+      - ollama_storage:/root/.ollama
+    deploy:
+      resources:
+        reservations:
+          devices:
+            - driver: nvidia
+              count: 1
+              capabilities: [gpu]
+
+  qdrant:
+    image: qdrant/qdrant
+    container_name: qdrant
+    networks: ['n8n']
+    restart: unless-stopped
+    ports:
+      - 6333:6333
+    volumes:
+      - qdrant_storage:/qdrant/storage