diff --git a/Dockerfile b/Dockerfile
index 98c3ec6..7667441 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM fedora:25
 RUN dnf install gnupg wget dnf-plugins-core -y  \
 	&& rpm --import "http://keyserver.ubuntu.com/pks/lookup?op=get&search=0x3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF" \
 	&& dnf config-manager --add-repo http://download.mono-project.com/repo/centos7/ \
-        && dnf install libzip mono-devel nuget msbuild  referenceassemblies-pcl \
+        && dnf install libzip mono-devel nuget msbuild referenceassemblies-pcl -y \
         && dnf clean all
 
 RUN dnf install curl unzip java-1.8.0-openjdk-headless java-1.8.0-openjdk-devel -y && \