Update Dockerfile

Dockerfile

@@ -1,13 +1,20 @@
-# Build
+# Stage 1: Build
 FROM node:20.2-alpine AS build
 WORKDIR /app
 COPY package.json yarn.lock ./
-RUN yarn install --frozen-lockfile
+RUN yarn install --frozen-lockfile --production && yarn cache clean
 COPY . .
 
-# Expose port 5000
-EXPOSE 5000
+# Stage 2: Production
+FROM nginx:latest
+COPY ./nginx.conf /etc/nginx/nginx.conf
+COPY --from=build /app/build /usr/share/nginx/html
 
-# Start
-ENV PORT=5000
-CMD ["yarn", "start"]
+# Expose port 80
+EXPOSE 80
+
+# Healthcheck
+HEALTHCHECK CMD curl --fail http://localhost:80 || exit 1
+
+# Start Nginx server
+CMD ["nginx", "-g", "daemon off;"]