# Use an official Python runtime as a parent image FROM python:3.9-slim # Create a working directory WORKDIR /app # Copy requirements and install COPY requirements.txt . RUN pip install --no-cache-dir -r requirements.txt # Copy the application code COPY app.py . # Expose the port Flask will run on (5000 by default) EXPOSE 5000 # Run the app CMD ["python", "app.py"]