fix: dep

Dockerfile

@@ -15,17 +15,17 @@ RUN node -e " \
 FROM node:$NODE_VERSION as deps
 WORKDIR /app
 COPY --from=prepare /app/package.json /app/yarn.lock ./
-RUN yarn install --frozen-lockfile
+RUN yarn install --frozen-lockfile && yarn sitemap
 
 # Rebuild the source code only when needed
 FROM node:$NODE_VERSION AS builder
 ENV NODE_ENV production
 ARG PRODUCTION
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
+COPY --from=deps /app/public ./public
 COPY . .
-RUN yarn sitemap && \
-    if [ -z "$PRODUCTION" ]; then \
+RUN if [ -z "$PRODUCTION" ]; then \
       echo "Copy staging values"; \
       cp .env.staging .env.production; \
       cp ./public/robots.staging.txt ./public/robots.txt; \