# Use an official Python runtime as a parent image
FROM python:3.11-slim-bullseye

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV APP_HOME=/app
WORKDIR $APP_HOME

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

# Copy the rest of the application code
COPY . .

# Tell Docker that the container listens on port 80
EXPOSE 80

# Run the application using Gunicorn
# This command runs the Flask app. 'app:app' means "in the file named app.py, run the variable named app".
# Adjust if your main file or Flask app variable is named differently.
CMD ["gunicorn", "--bind", "0.0.0.0:80", "app:app"]