diff --git a/Dockerfile b/Dockerfile
index 01f7d2f8..cae5d5aa 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -24,13 +24,15 @@ ARG PRODUCTION
 WORKDIR /app
 COPY --from=deps /app/node_modules ./node_modules
 COPY . .
-RUN yarn build && \
-    if [ -z "$PRODUCTION" ]; then \
-      echo "Copy staging values"; \
+RUN if [ -z "$PRODUCTION" ]; then \
+      echo "Overriding .env for staging"; \
       cp .env.staging .env.production; \
-      cp ./public/robots.staging.txt ./public/robots.txt; \
-    fi \
-    && yarn export
+    fi && \
+    yarn build:export \
+    && if [ -z "$PRODUCTION" ]; then \
+      echo "Overriding robots.txt for staging"; \
+      mv ./out/robots.staging.txt ./out/robots.txt; \
+    fi
 
 # Production image, copy all the files and run next
 FROM ghcr.io/socialgouv/docker/nginx:6.64.2 AS runner
diff --git a/public/sitemap-0.xml b/public/sitemap-0.xml
index d31856f1..1bdca2c2 100644
--- a/public/sitemap-0.xml
+++ b/public/sitemap-0.xml
@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">
-<url><loc>https://template.fabrique.social.gouv.fr</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2022-02-18T21:49:06.024Z</lastmod></url>
+<url><loc>https://template.fabrique.social.gouv.fr</loc><changefreq>daily</changefreq><priority>0.7</priority><lastmod>2022-02-19T09:12:14.128Z</lastmod></url>
 </urlset>
\ No newline at end of file