Dockerfile

# HuggingFace Spaces — single-container deployment
#
# Builds the React dashboard, then serves it as static files from FastAPI.
# Everything runs on port 7860 (required by HF Spaces).
# No GPU — CPU-only ONNX inference. Demo mode works at full speed.
# For real video, keep clips under 20 seconds.

# ── Stage 1: build React dashboard ───────────────────────────────────────────
FROM node:20-alpine AS frontend-build

WORKDIR /frontend
COPY dashboard/package.json dashboard/package-lock.json* ./
RUN npm install
COPY dashboard/ .
# API calls go to the same origin (/api/*) — no separate WS URL needed
RUN npm run build


# ── Stage 2: Python backend + static frontend ────────────────────────────────
FROM python:3.11-slim

WORKDIR /app

# System deps for OpenCV headless
RUN apt-get update && apt-get install -y --no-install-recommends \
        libglib2.0-0 libgomp1 libgl1 libglib2.0-0 \
        libxcb1 libxext6 libx11-6 libsm6 libxrender1 \
    && rm -rf /var/lib/apt/lists/*

# Python deps — CPU-only onnxruntime (no CUDA on HF free tier)
RUN pip install --no-cache-dir \
        fastapi \
        "uvicorn[standard]" \
        websockets \
        "pydantic>=2.0" \
        aiosqlite \
        python-multipart \
        python-dotenv \
        opencv-python-headless \
        supervision \
        numpy \
        onnxruntime \
        scipy \
        Pillow

# Copy backend source
COPY core/ ./core/
COPY api/  ./api/

# Copy built frontend into a location FastAPI will serve as static files
COPY --from=frontend-build /frontend/dist ./dashboard/dist

# Data directory for SQLite
RUN mkdir -p /app/data

# HF Spaces runs containers as uid 1000 — ensure writable data dir
RUN chown -R 1000:1000 /app/data

# HF Spaces requires port 7860
EXPOSE 7860

ENV API_HOST=0.0.0.0
ENV API_PORT=7860
ENV SERVE_FRONTEND=1

CMD ["uvicorn", "api.main:app", "--host", "0.0.0.0", "--port", "7860"]