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# GrantForge AI — Multi-stage Docker build
# Backend: FastAPI + LangGraph | Frontend: Vite React

# ──────────────────────────────────────────────────────────────────
# STAGE 1: Frontend build
# ──────────────────────────────────────────────────────────────────
FROM node:20-slim AS frontend-builder

WORKDIR /app/frontend

COPY frontend-react/package*.json ./
RUN rm -f package-lock.json && npm install

COPY frontend-react/ ./
RUN npm run build
# Artefakt: /app/frontend/dist/

# ──────────────────────────────────────────────────────────────────
# STAGE 2: Python dependencies
# ──────────────────────────────────────────────────────────────────
FROM python:3.11.9-slim AS python-deps

WORKDIR /install

RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq-dev gcc g++ libffi-dev libglib2.0-0 libpango-1.0-0 \
    libpangocairo-1.0-0 libcairo2 libcairo2-dev pkg-config python3-dev \
    && rm -rf /var/lib/apt/lists/*

COPY backend/requirements.txt .
RUN pip install --no-cache-dir --prefix=/install/pkg -r requirements.txt && \
    rm -rf /install/pkg/lib/python3.11/site-packages/pinecone_plugin_inference*

# ──────────────────────────────────────────────────────────────────
# STAGE 3: Runtime image
# ──────────────────────────────────────────────────────────────────
FROM python:3.11.9-slim AS runtime

WORKDIR /app

COPY --from=python-deps /install/pkg /usr/local

RUN apt-get update && apt-get install -y --no-install-recommends \
    libpq5 libglib2.0-0 libpango-1.0-0 libpangocairo-1.0-0 libcairo2 wget \
    && rm -rf /var/lib/apt/lists/*

COPY backend/ ./backend/
COPY --from=frontend-builder /app/frontend/dist ./static/

RUN mkdir -p /app/backend/assets && \
    wget -qO /app/backend/assets/Roboto-Regular.ttf "https://github.com/googlefonts/roboto/raw/main/src/hinted/Roboto-Regular.ttf" && \
    wget -qO /app/backend/assets/Roboto-Bold.ttf "https://github.com/googlefonts/roboto/raw/main/src/hinted/Roboto-Bold.ttf"

RUN mkdir -p /app/backend/cache

RUN useradd -m -u 1001 appuser && chown -R appuser:appuser /app
USER appuser

WORKDIR /app/backend

EXPOSE 7860

HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:7860/api/health')"

CMD ["gunicorn", "server:app", \
     "--worker-class", "uvicorn.workers.UvicornWorker", \
     "--workers", "2", \
     "--bind", "0.0.0.0:7860", \
     "--timeout", "120", \
     "--access-logfile", "-"]