diff --git a/Dockerfile b/Dockerfile
index 6d0032a..bd528e1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -16,7 +16,7 @@ RUN pnpm install --frozen-lockfile
 COPY web/ ./
 
 # Build frontend (SSR with adapter-node)
-RUN pnpm build
+RUN export BETTER_AUTH_SECRET="place-holder-for-build" && pnpm build
 
 # Stage 2: Build backend
 FROM dart:stable AS backend-build