remove nginx, serve ui from api itself

Dockerfile

@@ -1,15 +1,39 @@
+# Multi-stage build: First stage builds Angular frontend
+FROM node:18-alpine as frontend-builder
+
+# Install dependencies for native modules
+RUN apk add --no-cache python3 make g++
+
+WORKDIR /frontend
+
+# Copy package files first for better layer caching
+COPY frontend/package*.json ./
+
+# Clean install dependencies
+RUN npm ci --force
+
+# Copy frontend source
+COPY frontend/src ./src
+COPY frontend/public ./public
+COPY frontend/angular.json ./
+COPY frontend/tsconfig*.json ./
+
+# Build the Angular app for production
+RUN npm run build
+
+# Second stage: Python backend with Angular static files
 FROM python:3.11-alpine
 
 WORKDIR /app
 
 # Install system dependencies for Alpine
-# Alpine uses apk instead of apt-get and is lighter/faster
 RUN apk add --no-cache \
     gcc \
     musl-dev \
     postgresql-dev \
     postgresql-client \
-    linux-headers
+    linux-headers \
+    curl
 
 # Copy requirements and install Python dependencies
 COPY requirements.txt .
@@ -21,6 +45,9 @@ COPY utils/ ./utils/
 COPY alembic/ ./alembic/
 COPY alembic.ini .
 
+# Copy Angular build from frontend-builder stage
+COPY --from=frontend-builder /frontend/dist/frontend/browser ./static
+
 # Create non-root user (Alpine uses adduser instead of useradd)
 RUN adduser -D -u 1000 appuser && chown -R appuser:appuser /app
 USER appuser
@@ -30,7 +57,7 @@ EXPOSE 8000
 
 # Health check
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
-    CMD python -c "import requests; requests.get('http://localhost:8000/health')"
+    CMD curl -f http://localhost:8000/health
 
 # Run the application
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]