Dockerfile.fpm in conjur-cli-5.1.2 vs Dockerfile.fpm in conjur-cli-5.2.0

- old
+ new

@@ -4,10 +4,10 @@
 
 RUN apt-add-repository ppa:brightbox/ruby-ng
 
 RUN apt-get update -y && apt-get install -y ruby2.2 ruby2.2-dev
 
-RUN gem install --no-rdoc --no-ri bundler fpm
+RUN gem install --no-rdoc --no-ri bundler:1.11.2 fpm
 
 RUN mkdir /conjur-cli
 
 WORKDIR /conjur-cli