# ─────────────────────────────────────────────
# Base image (lightweight Python)
# ─────────────────────────────────────────────
FROM python:3.10-slim

# Prevent python from buffering stdout/stderr
ENV PYTHONUNBUFFERED=1
ENV PYTHONDONTWRITEBYTECODE=1

# Set working directory
WORKDIR /app

# Install system dependencies (needed for torch, pandas, etc.)
RUN apt-get update && apt-get install -y \
    build-essential \
    curl \
    git \
    && rm -rf /var/lib/apt/lists/*

# Copy requirements first (better Docker caching)
COPY requirements.txt .

# Upgrade pip
RUN pip install --upgrade pip

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

# Copy entire app
COPY . .

# Expose port (HF uses 7860 internally)
EXPOSE 7860

# Start FastAPI using uvicorn
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]