# Use an official Python runtime as a parent image
FROM python:3.10-slim

# Prevent Python from writing .pyc files and buffering stdout/stderr
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

WORKDIR /app

# Install system dependencies (build essentials, git for huggingface hub, curl)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    git \
    curl \
    && rm -rf /var/lib/apt/lists/*

# Copy only requirements first for better caching
COPY requirements.txt /app/requirements.txt

# Upgrade pip and install Python deps
RUN python -m pip install --upgrade pip
# (Assumes requirements.txt contains compatible pins; we enforce hf-hub here)
RUN pip install -r /app/requirements.txt

# Copy application code
COPY . /app

# Expose the port Gradio uses (Spaces uses 7860 by convention)
EXPOSE 7860

# Use a non-root user for better security (optional)
RUN adduser --disabled-password --gecos "" appuser && chown -R appuser /app
USER appuser

# Gradio launch its own server
CMD ["python", "app.py"]