Updated gitversion (#1)

Author: ehvattum

Dockerfile

@@ -10,7 +10,7 @@ RUN echo "deb http://download.mono-project.com/repo/debian wheezy/snapshots 4.4.
   && rm -rf /var/lib/apt/lists/* /tmp/*
 
 # Install GitVersion
-RUN curl -Ls https://github.com/GitTools/GitVersion/releases/download/v4.0.0-beta.9/GitVersion.CommandLine.4.0.0-beta0009.nupkg -o tmp.zip \ 
+RUN curl -Ls https://github.com/GitTools/GitVersion/releases/download/v4.0.0-beta.12/GitVersion.CommandLine.4.0.0-beta0012.nupkg -o tmp.zip \ 
   && unzip -d /usr/lib/GitVersion tmp.zip \
   && rm tmp.zip