FROM nvidia/cuda:12.1.1-cudnn8-runtime-ubuntu22.04

ENV DEBIAN_FRONTEND=noninteractive
ENV PYTHONUNBUFFERED=1

WORKDIR /app

RUN apt-get update && apt-get install -y --no-install-recommends \
    python3 python3-pip \
    git wget \
    && rm -rf /var/lib/apt/lists/*

RUN ln -sf /usr/bin/python3 /usr/bin/python

# Install PyTorch with CUDA 12.1 (replaces CPU-only install)
RUN pip install --no-cache-dir \
    torch==2.5.1 torchvision==0.20.1 \
    --index-url https://download.pytorch.org/whl/cu121

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY app.py .

RUN git clone https://github.com/chuangchuangtan/NPR-DeepfakeDetection.git npr_deepfakedetection

RUN mkdir -p npr_deepfakedetection/weights && \
    wget -O npr_deepfakedetection/weights/NPR.pth \
    https://github.com/chuangchuangtan/NPR-DeepfakeDetection/raw/main/model_epoch_last_3090.pth

ENV MODEL_PORT=5001
ENV PRELOAD_MODEL=false
ENV MODEL_TIMEOUT=600

EXPOSE 5001

RUN adduser --disabled-password --gecos '' appuser
USER appuser

CMD ["python", "app.py"]