FROM python:3.11-slim as base

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE 1
ENV PYTHONUNBUFFERED 1

# Install system dependencies
RUN apt-get update \
    && apt-get install -y --no-install-recommends \
        postgresql-client \
        build-essential \
        libpq-dev \
    && rm -rf /var/lib/apt/lists/*

# Set work directory
WORKDIR /app

# Install Python dependencies
COPY requirements/prod.txt /app/requirements/prod.txt
RUN pip install --no-cache-dir -r requirements/prod.txt

# Copy project
COPY . /app/

# Create directories
RUN mkdir -p /app/staticfiles /app/media /app/logs

# Collect static files
RUN python manage.py collectstatic --noinput

# Create non-root user
RUN groupadd -r appuser && useradd -r -g appuser appuser
RUN chown -R appuser:appuser /app
USER appuser

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:8000/health/ || exit 1

# Default command
CMD ["gunicorn", "config.wsgi:application", "--bind", "0.0.0.0:8000", "--workers", "4"]