FROM python:3.9-slim

# Set up work directory
WORKDIR /app

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

# Copy all backend files
COPY . .

# Set environment variables
ENV PORT=7860
ENV PYTHONUNBUFFERED=1

# Expose the port
EXPOSE 7860

# Run the app
CMD ["python", "app.py"]