Dockerfile

# Use Python 3.11 slim image as base
FROM python:3.11-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

# Install system dependencies required for Python packages
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    build-essential \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

# Copy application code
COPY . .

# Install Python dependencies
RUN pip install --upgrade pip && \
    pip install -r requirements.txt


# Production server with Gunicorn managing Uvicorn workers
# Workers = (2 * CPU cores) + 1
CMD ["gunicorn", "main:app", \
     "-w", "4", \
     "-k", "uvicorn.workers.UvicornWorker", \
     "--bind", "0.0.0.0:80", \
     "--access-logfile", "-", \
     "--error-logfile", "-", \
     "--max-requests", "1000", \
     "--max-requests-jitter", "50", \
     "--timeout", "60"]