FROM python:3.11-slim

# System deps for opencv, pillow, etc.
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libgl1 \
    libglib2.0-0 \
    libsm6 \
    libxext6 \
    libxrender1 \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces writable cache locations
ENV HF_HOME=/tmp/huggingface
ENV TRANSFORMERS_CACHE=/tmp/huggingface
ENV TORCH_HOME=/tmp/torch
ENV PYTHONUNBUFFERED=1

WORKDIR /app

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

COPY . .

# HF Spaces expects port 7860
EXPOSE 7860

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]