Improve docker file

Dockerfile

@@ -0,0 +1,32 @@
+# Stage 1: Build
+FROM node:18-slim AS builder
+
+WORKDIR /app
+
+# Copy dependencies first to cache better
+COPY package.json package-lock.json ./
+RUN npm install
+
+# Copy all source code
+COPY . .
+
+# Build the Next.js app
+RUN npm run build
+
+
+# Stage 2: Run production image
+FROM node:18-slim
+
+WORKDIR /app
+
+COPY --from=builder /app/package.json /app/package-lock.json ./
+RUN npm install --omit=dev
+
+COPY --from=builder /app/.next .next
+COPY --from=builder /app/public public
+COPY --from=builder /app/next.config.ts ./
+COPY --from=builder /app/src src
+
+EXPOSE 3000
+
+CMD ["npx", "next", "start"]