Dockerfile

# syntax=docker/dockerfile:1
# Multi-stage: Node build → FastAPI + static SPA on port 7860
# Aligned with HF Spaces Docker convention (uid 1000, port 7860).

FROM node:20-bookworm AS frontend-build
WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json* ./
RUN npm ci
COPY frontend/ ./
RUN npm run build

FROM python:3.12-slim-bookworm

RUN apt-get update && apt-get install -y --no-install-recommends ffmpeg \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces requires a non-root user with uid 1000
RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONUNBUFFERED=1 \
    CORS_ORIGINS=* \
    DATA_DIR=/data

WORKDIR $HOME/app

COPY --chown=user backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

COPY --chown=user backend/ ./
COPY --chown=user --from=frontend-build /app/frontend/dist ./static

ENV PYTHONPATH=$HOME/app

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