Fix missing backend requirements path

Dockerfile

@@ -1,70 +1,41 @@
-# ── Base image (lightweight, CPU-only) ────────────────────────────────────────
-FROM python:3.11-slim
+# LifeLine AI - Spaces-ready Dockerfile (clean, repo-root centric)
+FROM node:20-slim
 
-# ── Metadata ──────────────────────────────────────────────────────────────────
-LABEL maintainer="MediRoute Team" \
-      env_id="mediroute-openenv-v1" \
-      version="1.0.0" \
-      description="Medical Triage and Hospital Routing OpenEnv Environment" \
-      org.opencontainers.image.title="MediRoute OpenEnv" \
-      org.opencontainers.image.licenses="MIT"
+LABEL maintainer="LifeLine Team" \
+      org.opencontainers.image.title="LifeLine AI" \
+      description="Next.js frontend with optional Python FastAPI backend (Hugging Face Spaces ready)"
 
-# ── System dependencies ───────────────────────────────────────────────────────
-RUN apt-get update && apt-get install -y --no-install-recommends \
-        curl \
-        ca-certificates \
-        gnupg \
-        build-essential \
-    && rm -rf /var/lib/apt/lists/*
-
-# ── Python runtime defaults ───────────────────────────────────────────────────
-ENV PYTHONDONTWRITEBYTECODE=1 \
-    PYTHONUNBUFFERED=1
+ENV NODE_ENV=production \
+    PYTHONUNBUFFERED=1 \
+    DEBIAN_FRONTEND=noninteractive
 
-# ── Working directory ─────────────────────────────────────────────────────────
 WORKDIR /app
 
-# ── Install Python dependencies first (cache-friendly layer) ──────────────────
-COPY requirements.txt .
-RUN pip install --no-cache-dir --upgrade pip \
-    && pip install --no-cache-dir -r requirements.txt
+# Install minimal system deps (python + build tools)
+RUN apt-get update \
+    && apt-get install -y --no-install-recommends \
+         python3 python3-pip ca-certificates curl build-essential \
+    && rm -rf /var/lib/apt/lists/*
 
-# If a backend requirements file exists (lifeline-ai/backend/requirements.txt), install it too
-COPY backend/requirements.txt ./backend-requirements.txt
-RUN if [ -f ./backend-requirements.txt ]; then \
-            pip install --no-cache-dir -r ./backend-requirements.txt; \
-        fi
+# Copy Node package manifests and install Node deps from repo root
+COPY package*.json ./
+RUN if [ -f package-lock.json ]; then \
+      npm ci --no-audit --no-fund; \
+    else \
+      npm install --no-audit --no-fund; \
+    fi
 
-# Backwards-compat: install lifeline-ai/backend/requirements.txt if present
-COPY lifeline-ai/backend/requirements.txt ./lifeline-ai-backend-requirements.txt
-RUN if [ -f ./lifeline-ai-backend-requirements.txt ]; then \
-                    pip install --no-cache-dir -r ./lifeline-ai-backend-requirements.txt; \
-                fi
+# Install Python dependencies from repo-root requirements.txt only
+COPY requirements.txt .
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
 
-# ── Copy application source safely ────────────────────────────────────────────
-# Copying the full project avoids file-not-found build breaks and is HF-Spaces-friendly.
+# Copy the rest of the repository and build the Next.js frontend
 COPY . .
+RUN npm run build
 
-# Install Node.js and build the Next.js frontend (do this as root before switching user)
-RUN curl -fsSL https://deb.nodesource.com/setup_20.x | bash - \
-    && apt-get update && apt-get install -y --no-install-recommends nodejs \
-    && rm -rf /var/lib/apt/lists/* \
-    && npm ci --prefix lifeline-ai --no-audit --no-fund || npm install --prefix lifeline-ai \
-    && npm run build --prefix lifeline-ai
-
-# ── Non-root user for security ────────────────────────────────────────────────
-RUN adduser --disabled-password --gecos "" appuser
-USER appuser
-
-# ── Environment variable defaults (override at runtime) ───────────────────────
-ENV OPENAI_API_KEY="EMPTY" \
-    API_BASE_URL="https://api.openai.com/v1" \
-    MODEL_NAME="gpt-4o-mini" \
-    HF_TOKEN=""
-
-# ── Expose the port expected by Hugging Face Spaces (frontend)
+# Expose the UI port for Hugging Face Spaces
 EXPOSE 7860
 
-# Default command: start backend on 8000 (background) and run Next.js frontend on 7860
-# The frontend proxies /api to the backend via next.config.js rewrites.
-CMD ["sh", "-c", "uvicorn backend.app.main:app --host 127.0.0.1 --port 8000 & exec npm run start --prefix lifeline-ai -- -p 7860"]
+# Start backend (if present) on localhost:8000 in background, then run Next.js frontend on 7860
+CMD ["sh", "-c", "uvicorn backend.app.main:app --host 127.0.0.1 --port 8000 2>/dev/null & exec npm run start -- -p 7860"]