Dockerfile

# Use Python 3.12 slim image
FROM python:3.12-slim

# Set working directory
WORKDIR /app

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

# Install system dependencies
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    gcc \
    xmlsec1 \
    libxmlsec1-dev \
    libxmlsec1-openssl \
    pkg-config \
    cron \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better caching
COPY requirements.txt .

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

# Copy application code
COPY . .

# Create directory for database
RUN mkdir -p /app/data

# Make entrypoint script executable
RUN chmod +x /app/docker-entrypoint.sh

# Expose port
EXPOSE 3000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:3000/health', timeout=5)" || exit 1

# Use entrypoint script to initialize DB before starting Gunicorn
ENTRYPOINT ["/app/docker-entrypoint.sh"]