add dockerfile

Dockerfile

@@ -0,0 +1,11 @@
+FROM node:22-alpine AS build
+WORKDIR /app
+COPY package*.json ./
+RUN npm ci
+COPY . .
+RUN npm run build
+
+FROM nginx:alpine AS runtime
+COPY ./nginx.conf /etc/nginx/nginx.conf
+COPY --from=build /app/dist /usr/share/nginx/html
+EXPOSE 8080