Dockerfile

# Use official python slim image
FROM python:3.10-slim

# Set environment and python variables
ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PORT=7860

WORKDIR /code

# Install system dependencies (curl for healthchecks)
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements and install dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy all application files
COPY . .

# Set up writable directory for uploads and fallback sqlite databases
RUN mkdir -p /code/uploads && chmod -R 777 /code/uploads

# Hugging Face Spaces runs as user UID 1000 by default. 
# We create a user and set home permissions.
RUN useradd -m -u 1000 user
RUN chown -R user:user /code
USER user

# Set Flask environment variables
ENV FLASK_APP=app.py

# Expose Hugging Face standard port
EXPOSE 7860

# Run the Flask app with Gunicorn production server
CMD ["gunicorn", "--bind", "0.0.0.0:7860", "--workers", "2", "--timeout", "120", "app:app"]