FROM python:3.12-slim

WORKDIR /src

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

# Copy the entire project
COPY . ./app/

# Expose Gunicorn port
EXPOSE 8000

# Gunicorn command for a package structure
# "app:create_app()" assumes you have a factory function in __init__.py
# If your Flask instance is just named 'app' inside __init__.py, use "app:app"
CMD ["gunicorn", "--preload", "-w", "4", "-b", "0.0.0.0:8000", "app:create_app()"]