diff --git a/Dockerfile b/Dockerfile
index f318806..a725521 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,7 @@
-FROM alpine
-MAINTAINER ViViDboarder <ViViDboarder@gmail.com>
+FROM alpine:3.11
 
-RUN apk -Uuv add bash curl ca-certificates
+RUN apk --no-cache add bash=~5.0 curl=~7.67 ca-certificates=~20191127
 COPY push.sh /bin/
 RUN chmod +x /bin/push.sh
 
-ENTRYPOINT /bin/push.sh
+ENTRYPOINT ["/bin/push.sh"]