Dockerfile

FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Install system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    g++ \
    git \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first for better Docker layer 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 code
COPY . .

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

# Create necessary directories with proper permissions
RUN mkdir -p /data/.huggingface /app/data /app/results && \
    chown -R user:user /data /app

# Switch to non-root user
USER user

# Set environment variables
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    HF_HOME=/data/.huggingface \
    TRANSFORMERS_CACHE=/data/.huggingface \
    PYTHONPATH=/app \
    PYTHONUNBUFFERED=1

# Expose port
EXPOSE 7860

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

# Run the application
CMD ["gunicorn", "--worker-class", "sync", "--workers", "1", "--bind", "0.0.0.0:7860", "--timeout", "300", "--keep-alive", "2", "app:app"]