Dockerfile

# Frontend build stage
FROM node:18-alpine AS frontend-build

WORKDIR /app/frontend

# Copy frontend package files
COPY frontend/package*.json ./

# Install frontend dependencies
RUN npm install

# Copy frontend source code
COPY frontend/ ./

# Build the frontend
RUN npm run build

# Python backend stage
FROM python:3.11-slim AS base

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

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    curl \
    libsdl2-dev \
    libsdl2-mixer-2.0-0 \
    libportaudio2 \
    libasound2-dev \
    && rm -rf /var/lib/apt/lists/*

# Create app user
RUN useradd --create-home --shell /bin/bash app

# Set work directory
WORKDIR /app

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

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

# Copy application code (excluding frontend source)
COPY . .

# Copy built frontend from frontend-build stage
COPY --from=frontend-build /app/frontend/dist ./static

# Create necessary directories
RUN mkdir -p /tmp/quantlink-audio && \
    chown -R app:app /app /tmp/quantlink-audio

# Switch to app user
USER app

# Expose port
EXPOSE 8000

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

# Run the application with gunicorn
CMD ["gunicorn", "--bind", "0.0.0.0:8000", "--workers", "4", "--worker-class", "sync", "--timeout", "120", "wsgi:app"]