Dockerfile

FROM python:3.9

# Create non-root user (HF best practice)
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

# Set working directory
WORKDIR /app

# Install dependencies
COPY --chown=user ./requirements.txt requirements.txt
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Copy all project files
COPY --chown=user . /app

# Expose Hugging Face default port
EXPOSE 7860

# Start Flask app with Gunicorn
CMD ["gunicorn", "app:app", "--bind", "0.0.0.0:7860"]