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| # --- STAGE 1: Frontend Builder --- | |
| FROM node:18-slim AS frontend-builder | |
| WORKDIR /app/frontend | |
| COPY frontend/package*.json ./ | |
| RUN npm ci | |
| COPY frontend/ ./ | |
| RUN npm run build | |
| # --- STAGE 2: Backend Runtime --- | |
| FROM python:3.12-slim | |
| # Install ONLY runtime libraries (no compilers/git) | |
| RUN apt-get update && apt-get install -y \ | |
| curl \ | |
| libopenblas0 \ | |
| && rm -rf /var/lib/apt/lists/* | |
| # Set up user | |
| RUN useradd -m -u 1000 user | |
| ENV HOME=/home/user PATH=/home/user/.local/bin:$PATH | |
| WORKDIR $HOME/app | |
| # We need compilers ONLY for the pip install phase | |
| # Use a temporary root session to install, then clean up | |
| COPY --chown=user requirements.txt ./ | |
| RUN apt-get update && apt-get install -y build-essential \ | |
| && pip install --no-cache-dir --user -r requirements.txt \ | |
| && apt-get purge -y build-essential && apt-get autoremove -y \ | |
| && rm -rf /var/lib/apt/lists/* | |
| USER user | |
| # Copy backend code | |
| COPY --chown=user backend/ ./backend/ | |
| # Copy React build from builder stage | |
| # NOTE: Using 'build' because that is the default React output folder | |
| COPY --chown=user --from=frontend-builder /app/frontend/build ./frontend/dist | |
| # Expose port | |
| EXPOSE 7860 | |
| # Start FastAPI | |
| CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "7860"] | |