# Use an official lightweight Python image.
FROM python:3.9-slim

# Set environment variables to disable bytecode generation and enable stdout/stderr logging.
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Set the working directory.
WORKDIR /app

# Copy the requirements file and install dependencies.
COPY requirements.txt .
RUN pip install --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy the rest of the application code.
COPY . .

# Expose the port the app runs on.
EXPOSE 9775

# Use gunicorn to serve the app.
CMD ["gunicorn", "--bind", "0.0.0.0:9775", "app_main:app"]