Update dockerfile

dockerfile

@@ -1,21 +1,15 @@
-# ─────────────────────────────────────────────────────────────────────────────
-# Option A: Use the official Bun image
-# ─────────────────────────────────────────────────────────────────────────────
-FROM jarredsumner/bun:latest
-
-# set working directory
+FROM node:18-alpine AS builder
 WORKDIR /app
-
-# copy lockfile and install deps
-COPY bun.lockb .
-COPY components.json .
-RUN bun install
-
-# copy rest of the source
+COPY package.json package-lock.json ./
+RUN npm ci
 COPY . .
+RUN npm run build
 
-# expose the port your app listens on
+FROM node:18-alpine AS runner
+WORKDIR /app
+# install a simple static server
+RUN npm install -g serve
+COPY --from=builder /app/dist ./dist
 EXPOSE 3000
+CMD ["serve", "-s", "dist", "-l", "3000"]
 
-# start the app (adjust if your start script is different)
-CMD ["bun", "run", "start"]