add docker

ui/Dockerfile

@@ -0,0 +1,21 @@
+FROM node:lts-alpine AS base
+WORKDIR /app
+COPY package*.json ./
+RUN npm install
+
+FROM base AS build
+WORKDIR /app
+COPY . .
+RUN npm run build
+
+FROM node:lts-alpine AS runner
+WORKDIR /app
+COPY --from=base /app/node_modules ./node_modules
+COPY --from=build /app/public ./public
+COPY --from=build /app/.next/standalone ./
+COPY --from=build /app/.next/static ./.next/static
+
+EXPOSE 3000
+ENV PORT=3000
+ENV HOSTNAME="0.0.0.0"
+CMD ["node", "server.js"]