add docker

Dockerfile

@@ -0,0 +1,33 @@
+FROM node:22-alpine AS builder
+
+WORKDIR /app
+
+RUN npm install -g pnpm
+
+COPY pnpm-lock.yaml ./
+COPY package.json ./
+
+RUN pnpm install --frozen-lockfile
+
+COPY . .
+
+RUN pnpm build
+
+FROM node:22-alpine AS runner
+
+WORKDIR /app
+
+ENV NODE_ENV=production
+
+RUN npm install -g pnpm
+
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/.next ./.next
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/package.json ./package.json
+COPY --from=builder /app/next.config.js ./next.config.js
+COPY --from=builder /app/app ./app
+
+EXPOSE 3000
+
+CMD ["pnpm", "start"]