Updating dockerfile.

Dockerfile

@@ -15,7 +15,7 @@ RUN \
 
 
 # Rebuild the source code only when needed
-FROM node:16-alpine AS builder
+FROM node:18-alpine AS builder
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
@@ -31,7 +31,7 @@ COPY . .
 RUN npm run build
 
 # Production image, copy all the files and run next
-FROM node:16-alpine AS runner
+FROM node:18-alpine AS runner
 WORKDIR /app
 
 ENV NODE_ENV production
@@ -47,6 +47,7 @@ COPY --from=builder /app/public ./public
 # https://nextjs.org/docs/advanced-features/output-file-tracing
 COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
 COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+COPY --from=builder /app/node_modules/next/dist/compiled/jest-worker ./node_modules/next/dist/compiled/jest-worker
 
 USER nextjs