FROM python:3.10-slim

RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

# Non-root user required by Hugging Face Spaces
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH

WORKDIR /home/user/app

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

COPY --chown=user main.py .
COPY --chown=user u2net.onnx .

RUN mkdir -p uploads outputs

EXPOSE 7860

ENV PYTHONUNBUFFERED=1

HEALTHCHECK --interval=30s --timeout=10s --start-period=20s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

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