Dockerfile

FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1
ENV MPLCONFIGDIR=/tmp/matplotlib-cache
ENV PIP_DEFAULT_TIMEOUT=100
ENV PIP_NO_CACHE_DIR=1

# Create cache directories
RUN mkdir -p /tmp/voices /tmp/output /tmp/matplotlib-cache && \
    chmod 777 /tmp/voices /tmp/output /tmp/matplotlib-cache

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

# Upgrade pip first
RUN pip install --upgrade pip

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

# Install Python dependencies with timeout and retry
RUN pip install --no-cache-dir --timeout=100 --retries=5 -r requirements.txt

# Copy application code
COPY app.py .

# Create non-root user
RUN useradd -m -u 1000 user
USER user

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/api/health || exit 1

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