Dockerfile

FROM python:3.10-slim

# Force Python version for HuggingFace Spaces
ENV PYTHON_VERSION=3.10

# System dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    libsndfile1 \
    ffmpeg \
    git \
    && rm -rf /var/lib/apt/lists/*

# Create app user
RUN useradd -m -u 1000 appuser

# Working directory
WORKDIR /app

# Copy requirements first for caching
COPY requirements.txt .

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

# Copy application files
COPY app.py .
COPY tts_engine.py .
COPY file_handler.py .
COPY setup_speakers.py .
COPY README.md .

# Create directories
RUN mkdir -p speakers temp_audio && \
    chown -R appuser:appuser /app

# Switch to app user
USER appuser

# Generate speaker files
RUN python setup_speakers.py

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=120s \
    CMD python -c "import requests; requests.get('http://localhost:7860')" || exit 1

# Start app
CMD ["python", "app.py"]