diff --git a/platypush/install/docker/alpine.Dockerfile b/platypush/install/docker/alpine.Dockerfile
index e1e6016b7..5092f782a 100644
--- a/platypush/install/docker/alpine.Dockerfile
+++ b/platypush/install/docker/alpine.Dockerfile
@@ -10,6 +10,7 @@ RUN apk update
 RUN /install/platypush/install/scripts/alpine/install.sh
 RUN cd /install && pip install -U --no-input --no-cache-dir .
 RUN rm -rf /install
+RUN rm -rf /var/cache/apk
 
 EXPOSE 8008