Dockerfile

# HuduGlue Docker Image
# Multi-stage build for optimized image size

# Stage 1: Build stage
FROM python:3.12-slim as builder

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

# Install system dependencies for building
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libmariadb-dev \
    libmariadb-dev-compat \
    pkg-config \
    && rm -rf /var/lib/apt/lists/*

# Create virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Copy requirements and install Python dependencies
COPY requirements.txt /tmp/requirements.txt
RUN pip install --upgrade pip && \
    pip install -r /tmp/requirements.txt

# Stage 2: Runtime stage
FROM python:3.12-slim

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PATH="/opt/venv/bin:$PATH" \
    DJANGO_SETTINGS_MODULE=config.settings

# Install runtime dependencies only
RUN apt-get update && apt-get install -y --no-install-recommends \
    libmariadb3 \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy virtual environment from builder
COPY --from=builder /opt/venv /opt/venv

# Create app user for security
RUN useradd -m -u 1000 huduglue && \
    mkdir -p /app /app/logs /app/media /app/static_collected && \
    chown -R huduglue:huduglue /app

# Set working directory
WORKDIR /app

# Copy application code
COPY --chown=huduglue:huduglue . /app/

# Switch to non-root user
USER huduglue

# Collect static files (will be run again in entrypoint, but doing it here caches it)
RUN python manage.py collectstatic --noinput || true

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:8000/health/ || exit 1

# Entrypoint script
COPY --chown=huduglue:huduglue docker-entrypoint.sh /app/docker-entrypoint.sh
RUN chmod +x /app/docker-entrypoint.sh

ENTRYPOINT ["/app/docker-entrypoint.sh"]

# Default command (can be overridden)
CMD ["gunicorn", "config.wsgi:application", "--bind", "0.0.0.0:8000", "--workers", "4", "--timeout", "120", "--access-logfile", "-", "--error-logfile", "-"]