Dockerfile

# ── PromptZip FastAPI — Hugging Face Docker Space ────────────────────────────
# HF Spaces requires the container to listen on port 7860.
# The Space runs as a non-root user (UID 1000), so we create one here.

FROM python:3.11-slim

# ---------- System deps ----------
RUN apt-get update && apt-get install -y --no-install-recommends \
        build-essential \
        curl \
    && rm -rf /var/lib/apt/lists/*

# ---------- Non-root user (matches HF Spaces UID) ----------
RUN useradd -m -u 1000 appuser
WORKDIR /app

# ---------- Python deps ----------
COPY requirements.txt .
RUN pip install --no-cache-dir --upgrade pip \
 && pip install --no-cache-dir -r requirements.txt

# ---------- Application ----------
COPY main.py .

# Pre-download tiktoken encoding data so first request is instant
RUN python -c "import tiktoken; tiktoken.get_encoding('cl100k_base')"

# Switch to non-root
USER appuser

# ---------- Runtime ----------
# HF Spaces exposes exactly port 7860
EXPOSE 7860

CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1"]