add deploy

frontend/Dockerfile

@@ -0,0 +1,40 @@
+# Build stage
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy source code
+COPY . .
+
+# Build argument for API URL (optional, defaults to empty for production)
+# Empty value means use relative paths, which works with nginx proxy
+ARG VITE_API_URL=""
+ENV VITE_API_URL=$VITE_API_URL
+
+# Build the application
+RUN npm run build
+
+# Production stage
+FROM nginx:alpine
+
+# Copy built files from builder
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+# Copy nginx configuration
+COPY nginx.conf /etc/nginx/nginx.conf
+
+# Expose port
+EXPOSE 80
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=3s --start-period=5s \
+  CMD wget --quiet --tries=1 --spider http://localhost/health || exit 1
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]