FROM python:3.9-slim

# Set the working directory inside the container
WORKDIR /app

# Copy all files from the current directory to the container's working directory
COPY . .

# Install dependencies from the requirements file without using cache to reduce image size
RUN pip install --no-cache-dir --upgrade -r requirements.txt

# Start the Flask app via Gunicorn with 4 workers on port 7860
# Assumes Flask instance is named `Product_Store_Sales_Total` in app.py
CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:7860", "app:Product_Store_Sales_Total"]