diff --git a/template/crystal-http/Dockerfile b/template/crystal-http/Dockerfile
index 3083090..d2357bc 100644
--- a/template/crystal-http/Dockerfile
+++ b/template/crystal-http/Dockerfile
@@ -11,7 +11,7 @@ WORKDIR /home/app
 COPY function/shard.yml shard.yml
 RUN shards install
 COPY . .
-RUN crystal build main.cr -o handler -p && strip handler && rm -rf /root/.cache
+RUN crystal build main.cr -o handler --error-trace -p  && rm -rf /root/.cache
 
 FROM --platform=${TARGETPLATFORM:-linux/amd64} alpine as ship
 ARG ADDITIONAL_PACKAGE