diff --git a/Dockerfile b/Dockerfile
index db9137f..4459f02 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 from ubuntu:trusty
 
-run apt-get update
-run apt-get upgrade
+run apt-get update -y
+run apt-get upgrade -y
 
 run apt-get install -y build-essential
 run apt-get install -y gcc-mingw-w64