FROM python:3.10-slim

RUN apt-get update && apt-get install -y \
    git git-lfs libgl1 libglib2.0-0 libsm6 libxext6 libxrender-dev ffmpeg \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY . .

# PyTorch CPU
RUN pip install --no-cache-dir \
    "torch==2.1.2+cpu" "torchvision==0.16.2+cpu" \
    --extra-index-url https://download.pytorch.org/whl/cpu

# MMDet 3.x stack
RUN pip install --no-cache-dir openmim && \
    mim install "mmengine>=0.7.1,<1.0.0" && \
    mim install "mmcv>=2.0.0rc4,<2.2.0"

# MMDetection from local submodule
RUN pip install --no-cache-dir -e ./mmdetection

# App deps — no Gradio, no huggingface_hub conflicts
RUN pip install --no-cache-dir \
    fastapi==0.110.0 \
    uvicorn==0.29.0 \
    python-multipart==0.0.9 \
    opencv-python-headless \
    pillow \
    "numpy>=1.23.0,<2.0"

RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH

EXPOSE 7860
CMD ["python", "app.py"]