ruby-dev \
libffi-dev \
libxml2-dev && \
+ gem install public_suffix -v 4.0.7 --no-document && \
+ gem install multipart-post -v 2.2.0 --no-document && \
gem install chef:13.8.5 berkshelf:6.3.1 io-console:0.4.6 etc webrick --no-document && \
apt-get update -y && apt-get remove bash -y --allow-remove-essential && \
apt-get install -y binutils && apt-get clean && gem cleanup