chore(root): add Dockerfile for production build

Dockerfile

@@ -0,0 +1,21 @@
+FROM node:18-alpine as builder
+
+WORKDIR /app
+
+COPY package*.json ./
+
+RUN npm ci
+
+COPY . .
+
+RUN npm run build
+
+FROM nginx:alpine
+
+COPY --from=builder /app/dist /usr/share/nginx/html
+
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]