diff --git a/docker/Dockerfile b/docker/Dockerfile
index d63ad334..a79d7297 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -72,5 +72,6 @@ RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories
 COPY --from=build /ql/node_modules /ql/node_modules/
 RUN cd ${QL_DIR} \
     && yarn build \
-    && yarn build-back
+    && yarn build-back \
+    && rm -rf node_modules
 ENTRYPOINT ["entrypoint"]
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