FROM python:3.11-slim

# System deps
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Create non-root user (HF requires this)
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"
ENV HF_HOME=/home/user/.cache/huggingface

WORKDIR /app

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

# Copy app code
COPY --chown=user app.py .

# Streamlit listens on 8501
EXPOSE 8501

# Healthcheck so HF knows the app is up
HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health || exit 1

# Run Streamlit
ENTRYPOINT ["streamlit", "run", "app.py", \
            "--server.port=8501", \
            "--server.address=0.0.0.0", \
            "--server.headless=true", \
            "--browser.gatherUsageStats=false"]