diff --git a/Dockerfile b/Dockerfile
index 1185ada..f47986f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,10 @@ RUN if [ -n "$NPM_TOKEN" ]; then \
 
 ENV NEXT_TELEMETRY_DISABLED=1
 COPY . .
-RUN npm run build
+# Diagnose what's in .bin after install, then invoke next directly via node
+# to bypass any PATH / symlink resolution issues with `npm run`.
+RUN ls node_modules/.bin/next 2>&1 || echo "WARN: next not in .bin" ; \
+    node node_modules/next/dist/bin/next build
 
 # ---------------------------------------------------------------------------
 # 2. Runner — minimal image. Standalone server + static assets only.