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FROM python:3.10-slim

WORKDIR /app

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

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

# Upgrade pip
RUN pip install --no-cache-dir --upgrade pip

# Install dependencies
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY . .

# Create necessary directories
RUN mkdir -p \
    data/database \
    data/backups \
    logs \
    static/css \
    static/js \
    .cache/huggingface

# Set permissions
RUN chmod -R 755 /app

# Environment variables
ENV PORT=7860 \
    PYTHONUNBUFFERED=1 \
    TRANSFORMERS_CACHE=/app/.cache/huggingface \
    HF_HOME=/app/.cache/huggingface \
    PYTHONDONTWRITEBYTECODE=1

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
    CMD curl -f http://localhost:7860/api/health || exit 1

# Run application
CMD ["uvicorn", "hf_unified_server:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]