diff --git a/Dockerfile b/Dockerfile
index eb37d55..ac0ed0b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,6 +5,7 @@ COPY package.json yarn.lock ./
 RUN ls -la
 RUN yarn install
 COPY . .
+RUN ls -la
 EXPOSE 80
 CMD ["HOST=api.koptilnya.xyz/bpmn PORT=80 npx y-websocket"]