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# ── Stage 1: Build the Next.js frontend ──────────────────────────
FROM node:20-slim AS frontend-build
WORKDIR /app/frontend
COPY src/frontend/package.json src/frontend/package-lock.json* ./
RUN npm ci 2>/dev/null || npm install
COPY src/frontend/ ./
# Build-time env: WebSocket and API go through the same origin via nginx
ENV NEXT_PUBLIC_WS_URL=""
ENV NEXT_PUBLIC_API_URL=""
ENV NEXT_TELEMETRY_DISABLED=1
# Limit Node memory for constrained HF Space build environment
RUN NODE_OPTIONS=--max-old-space-size=1536 npm run build
# ── Stage 2: Production image ────────────────────────────────────
FROM python:3.10-slim
# System deps: nginx + node (for Next.js standalone server)
RUN apt-get update && apt-get install -y --no-install-recommends \
nginx \
curl \
&& curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
&& apt-get install -y --no-install-recommends nodejs \
&& rm -rf /var/lib/apt/lists/*
# ── Python backend ───────────────────────────────────────────────
WORKDIR /app/backend
COPY src/backend/requirements.txt ./
# Install Python deps (skip torch/transformers — we use API mode only)
RUN pip install --no-cache-dir \
fastapi==0.115.0 \
"uvicorn[standard]==0.30.6" \
websockets==12.0 \
pydantic-settings==2.5.2 \
python-dotenv==1.0.1 \
openai==1.51.0 \
httpx==0.27.2 \
chromadb==0.5.7 \
sentence-transformers==3.1.1 \
python-multipart==0.0.10
# Copy backend source (ChromaDB will auto-build from app/data/clinical_guidelines.json on first run)
COPY src/backend/app/ ./app/
# ── Frontend standalone build ────────────────────────────────────
# Next.js standalone output: self-contained server, no node_modules needed
WORKDIR /app/frontend
COPY --from=frontend-build /app/frontend/.next/standalone ./
COPY --from=frontend-build /app/frontend/.next/static ./.next/static
RUN mkdir -p ./public
# ── Nginx config ─────────────────────────────────────────────────
COPY space/nginx.conf /etc/nginx/nginx.conf
# ── Startup script ───────────────────────────────────────────────
COPY space/start.sh /app/start.sh
RUN chmod +x /app/start.sh
# HF Spaces expects port 7860
EXPOSE 7860
# Health check
HEALTHCHECK --interval=30s --timeout=10s --start-period=60s --retries=3 \
CMD curl -f http://localhost:7860/api/health || exit 1
CMD ["/app/start.sh"]
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