# Use official Python runtime as base image
FROM python:3.10-alpine

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1
ENV FLASK_ENV production

# Create and set working directory
WORKDIR /app

# Install system dependencies
RUN apk add --no-cache gcc musl-dev linux-headers git

# Install Python dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Expose the application port
EXPOSE 5001

# Run application with Gunicorn
CMD ["gunicorn", "--bind", "0.0.0.0:5001", "--workers", "4", "app:app"]