deploy/docker/Dockerfile.backend

# VoiceForge Backend Dockerfile
# Multi-stage build for optimized production image

# Stage 1: Builder
FROM python:3.11-slim as builder

WORKDIR /app

# Install build dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
COPY requirements.txt .
RUN pip wheel --no-cache-dir --no-deps --wheel-dir /app/wheels -r requirements.txt

# Stage 2: Production
FROM python:3.11-slim as production

WORKDIR /app

# Install runtime dependencies
RUN apt-get update && apt-get install -y \
    ffmpeg \
    libsndfile1 \
    && rm -rf /var/lib/apt/lists/*

# Copy wheels from builder
COPY --from=builder /app/wheels /wheels
RUN pip install --no-cache /wheels/*

# Copy application code
COPY app/ ./app/

# Create upload directory
RUN mkdir -p /app/uploads && chmod 755 /app/uploads

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

# Expose port
EXPOSE 8000

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import httpx; httpx.get('http://localhost:8000/health')" || exit 1

# Run the application
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]