Dockerfile in rimless-0.1.4 vs Dockerfile in rimless-0.2.0

@@ -9,10 +9,11 @@
   apt-get install -y \
     build-essential locales sudo vim \
     ca-certificates \
     bash-completion inotify-tools && \
   echo 'en_US.UTF-8 UTF-8' >> /etc/locale.gen && /usr/sbin/locale-gen && \
-  gem install bundler --no-document --no-prerelease
+  gem install bundler -v '~> 2.0' --no-document --no-prerelease && \
+  gem install bundler -v '~> 1.0' --no-document --no-prerelease
 
 # Add new web user
 RUN mkdir /app && \
   adduser web --home /home/web --shell /bin/bash \
     --disabled-password --gecos ""