Dockerfile

# ── Hugging Face Spaces / Docker deployment ───────────────────────────────────
# Port 7860 is required for HF Spaces
 
FROM python:3.11-slim
 
# System deps for chromadb and sentence-transformers
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc g++ libgomp1 && \
    rm -rf /var/lib/apt/lists/*
 
WORKDIR /app
 
# Install Python deps first (cached layer)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
 
# Copy all flat-uploaded files
COPY . .
 
# Reorganise flat upload into the directory structure the app expects:
#   static/  → index.html, manifest.json, sw.js
#   knowledge/ → data_engineering_patterns.pdf
RUN mkdir -p static knowledge && \
    mv index.html manifest.json sw.js static/ 2>/dev/null || true && \
    mv data_engineering_patterns.pdf knowledge/ 2>/dev/null || true
 
# HF Spaces runs as non-root
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH
 
# ── UTF-8 locale ──────────────────────────────────────────────────────────────
# PDF extractors emit Unicode structural chars (U+2028, U+00A0, etc). Without
# these env vars, Python defaults to ASCII inside a minimal slim container and
# httpx raises UnicodeEncodeError when sending them upstream to Groq.
ENV LANG=C.UTF-8 \
    LC_ALL=C.UTF-8 \
    PYTHONIOENCODING=utf-8
 
EXPOSE 7860
 
# PORT env var is set automatically by HF Spaces to 7860
ENV PORT=7860
 
CMD ["python", "app.py"]