# syntax=docker/dockerfile:1
# Hugging Face Spaces — Docker deployment
# Port 7860 is required by HF Spaces.
#
# Space Secrets to set (Settings → Variables and secrets):
#   HUGGINGFACE_TOKEN   HF token with Llama-3.2-1B licence accepted
#   OPENAI_API_KEY      GPT-4.1 primary (or leave blank, use GROQ_API_KEY only)
#   GROQ_API_KEY        Groq fallback — free tier at console.groq.com
#
# The entrypoint pre-downloads Llama weights before uvicorn starts so the
# first user request is not blocked by a 2.5 GB download.

FROM python:3.11-slim-bookworm

ENV HF_HOME=/app/.cache/huggingface \
    PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1

WORKDIR /app

COPY requirements.txt .
# Install CPU-only torch first to avoid pulling the 2 GB CUDA wheel.
# HF Spaces CPU Basic has no GPU; the Llama assistant auto-detects this.
RUN pip install --no-cache-dir \
        torch>=2.2.0 \
        --index-url https://download.pytorch.org/whl/cpu \
    && pip install --no-cache-dir -r requirements.txt

COPY app/ app/
COPY scripts/entrypoint.sh scripts/entrypoint.sh

RUN chmod +x scripts/entrypoint.sh

EXPOSE 7860

ENTRYPOINT ["scripts/entrypoint.sh"]