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# Multi-stage build for smaller image size
FROM python:3.10-slim as builder

# Set working directory
WORKDIR /app

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

# Copy requirements
COPY requirements.txt .

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

# Final stage
FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Copy Python packages from builder
COPY --from=builder /root/.local /root/.local

# Make sure scripts in .local are usable
ENV PATH=/root/.local/bin:$PATH

# Copy application code
COPY ./app ./app

# Copy models directory with all files
COPY ./models ./models

# Debug: List files to verify
RUN echo "=== Checking models directory ===" && \
    ls -la ./models/ && \
    echo "=== Current directory ===" && \
    pwd && \
    ls -la

# Set environment variables
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1
ENV MODEL_PATH=./models/PhoBERTFineTuned_best.pth

# Expose port
EXPOSE 7860

# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
    CMD python -c "import requests; requests.get('http://localhost:7860/api/v1/health')"

# Run the application
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "7860"]