diff --git a/Dockerfile b/Dockerfile
index 7f62de7..b54d26c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -49,7 +49,7 @@ WORKDIR /opt/www
 
 COPY . /opt/www
 
-RUN composer install --no-dev -o && php bin/hyperf.php
+RUN composer clear-cache && composer install --no-dev -o && php bin/hyperf.php
 
 EXPOSE 9501