Updated Dockerfile to be faster and more secure

Dockerfile

@@ -1,13 +1,21 @@
 # build stage
 FROM node:lts-alpine as build-stage
 WORKDIR /app
-COPY package*.json ./
+COPY package.json package-lock.json ./
-RUN npm install
+RUN npm ci --omit=dev
 COPY . .
 RUN npm run build
 
 # production stage
 FROM nginx:stable-alpine as production-stage
+
+# Remove default Nginx index page
+RUN rm -rf /usr/share/nginx/html/*
+# Copy built files from build stage
 COPY --from=build-stage /app/dist /usr/share/nginx/html
 EXPOSE 80
+
+# Use a non-root user for security
+USER nginx
+
 CMD ["nginx", "-g", "daemon off;"]