FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y \
    build-essential \
    git \
    wget \
    curl \
    libsndfile1 \
    ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better 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
COPY app.py .
COPY README.md .

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

# Set environment variables
ENV PYTHONPATH=/app
ENV PYTHONUNBUFFERED=1
ENV TRANSFORMERS_CACHE=/app/cache
ENV HF_HOME=/app/cache

# Create cache directory
RUN mkdir -p /app/cache

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Run the application
CMD ["python", "app.py"]