version: "3.9" services:  postgres:    image: postgres:16    container_name: vllm-studio-postgres    environment:      - POSTGRES_USER=postgres      - POSTGRES_PASSWORD=postgres      - POSTGRES_DB=litellm    volumes:      - ./data/postgres:/var/lib/postgresql/data    restart: unless-stopped   # LiteLLM - API gateway (handles routing, format translation, cost tracking)  litellm:    image: ghcr.io/berriai/litellm:main-latest    container_name: vllm-studio-litellm    ports:      - "4100:4000"    volumes:      - ./config/litellm.yaml:/app/config.yaml      - ./data:/app/data    environment:      - LITELLM_MASTER_KEY=${LITELLM_MASTER_KEY:-sk-master}      - DATABASE_URL=postgresql://postgres:postgres@vllm-studio-postgres:5432/litellm    extra_hosts:      - "host.docker.internal:host-gateway"    command: ["--config", "/app/config.yaml", "--port", "4000"]    restart: unless-stopped    depends_on:      - postgres    healthcheck:      test: ["CMD-SHELL", "curl -fsS -H \"Authorization: Bearer ${LITELLM_MASTER_KEY:-sk-master}\" http://localhost:4000/health >/dev/null"]      interval: 30s      timeout: 10s      retries: 3   # Frontend (optional)  frontend:    build:      context: ./frontend      args:        NEXT_PUBLIC_API_URL: ${NEXT_PUBLIC_API_URL:-http://localhost:8080}    container_name: vllm-studio-frontend    ports:      - "3000:3000"    environment:      - NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL:-http://localhost:8080}      - NEXT_PUBLIC_LITELLM_URL=${NEXT_PUBLIC_LITELLM_URL:-http://localhost:4100}    extra_hosts:      - "host.docker.internal:host-gateway"    restart: unless-stopped