fix dockerfile

Dockerfile

@@ -4,13 +4,13 @@ WORKDIR /usr/src/app
 COPY package*.json ./
 RUN npm ci
 COPY . .
+ENV NEXT_PRIVATE_STANDALONE true
 RUN npm run build
 
 FROM node:slim
 LABEL Maintainer Michael Shihjay Chen <[email protected]>
 WORKDIR /usr/src/app
 ENV NODE_ENV production
-ENV NEXT_PRIVATE_STANDALONE true
 COPY --from=builder /usr/src/app/.next/standalone ./
 COPY --from=builder /usr/src/app/.next/static ./.next/static
 RUN mkdir -p /usr/src/app/trustees