feat: Add Dockerfile for multi-stage build of React application served by Nginx

client/Dockerfile

@@ -1,9 +1,9 @@
 # Stage 1: Build the React application
-FROM node:18-alpine as build
+FROM node:18-alpine AS build
 
 WORKDIR /app
 
-COPY package*.json ./
+COPY package.json ./
 RUN npm install
 
 COPY . .