# ⒸAngelaMos | 2025
# Production FastAPI Dockerfile
# Optimized for performance with gunicorn multi-worker setup
# No hot reload, built image (no volume mounts)

FROM python:3.11-slim

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

# Set working directory
WORKDIR /app

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

# Copy only requirements first (for layer caching)
COPY backend/requirements.txt .

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

# Install gunicorn for production
RUN pip install --no-cache-dir gunicorn

# Copy application code
COPY backend/ .

# Create non-root user for security
RUN useradd -m -u 1000 appuser && chown -R appuser:appuser /app
USER appuser

# Expose port
EXPOSE 8000

# Run with gunicorn (4 workers, uvicorn worker class for async support)
CMD ["gunicorn", "main:app", \
     "--workers", "4", \
     "--worker-class", "uvicorn.workers.UvicornWorker", \
     "--bind", "0.0.0.0:8000", \
     "--access-logfile", "-", \
     "--error-logfile", "-"]