diff --git a/dashboard/Dockerfile b/dashboard/Dockerfile
index 1861cb847..a5c53e18c 100644
--- a/dashboard/Dockerfile
+++ b/dashboard/Dockerfile
@@ -20,9 +20,13 @@ ENV SENTRY_ORG=incubateur
 ENV SENTRY_URL=https://sentry.fabrique.social.gouv.fr/
 ENV SENTRY_PROJECT=mano
 
-RUN --mount=type=secret,id=sentry_auth_token export SENTRY_AUTH_TOKEN=$(cat /run/secrets/sentry_auth_token); \
-  yarn build && \
-  yarn sentry:sourcemaps
+RUN --mount=type=secret,id=sentry_auth_token \
+    yarn build; \
+    if [ -f "/run/secrets/sentry_auth_token" ]; then \
+        export SENTRY_AUTH_TOKEN=$(cat /run/secrets/sentry_auth_token); \
+        yarn sentry:sourcemaps; \
+    fi
+
 
 FROM ghcr.io/socialgouv/docker/nginx4spa:7.0.1