# The same trader on an NVIDIA GPU. Layer it over the base file:
#
#   docker compose -f docker-compose.yml -f docker-compose.cuda.yml up -d --build
#
# Host prerequisites: an NVIDIA driver new enough for CUDA 12.6 (>= 560) and the NVIDIA Container Toolkit
# (`nvidia-ctk runtime configure --runtime=docker`, then restart Docker). The CUDA runtime itself ships inside the torch
# wheel, so no CUDA base image is needed. DEVICE=auto picks the GPU when the container sees one; DEVICE_MEMORY_GB caps
# the batch sizes derived from its free memory when the card is shared.
services:
  fly:
    build:
      args:
        TORCH_INDEX: cu126      # or cu130 for the newest driver
    environment:
      DEVICE: auto
    deploy:
      resources:
        reservations:
          devices:
            - driver: nvidia
              count: all
              capabilities: [gpu]