FROM python:3.10-slim

# Set working directory
WORKDIR /app

# Environment sanity
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

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

# Copy requirements first (better 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 . .

# HF Spaces port
EXPOSE 7860

# Start FastAPI
CMD ["uvicorn", "backend.api_backend:app", "--host", "0.0.0.0", "--port", "7860", "--root-path", "/proxy/7860"]