Here's a version of andy edwards' Dockerfile which applies my workaround: --- FROM ubuntu:trusty ENV DEBIAN_FRONTEND noninteractive RUN apt-get update && apt-get -y install ruby2.0=2.0.0.484-1ubuntu2 libruby2.0=2.0.0.484-1ubuntu2 libffi-dev ruby2.0-dev build-essential RUN ruby2.0 -S gem install psych --version 2.0.17 RUN apt-get -y install ruby2.0 libruby2.0 RUN ruby2.0 -r yaml -r rubygems/safe_yaml -S gem2.0 install rubygems-update ---
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1777174 Title: 2.0.0.484-1ubuntu2.10 triggers uninitialized constant Gem::SafeYAML on calling gem2.0 install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ruby2.0/+bug/1777174/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
