make all the remaining ruby distribtest pass

tools/dockerfile/distribtest/ruby_centos6_x64/Dockerfile

@@ -29,6 +29,13 @@
 
 FROM centos:6
 
-RUN yum install -y ruby
+RUN yum install -y curl
 
-RUN gem install bundler
+RUN yum install -y tar which
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable --ruby
+
+RUN /bin/bash -l -c "echo '. /etc/profile.d/rvm.sh' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install --update bundler"

tools/dockerfile/distribtest/ruby_opensuse_x64/Dockerfile

@@ -29,6 +29,17 @@
 
 FROM opensuse:42.1
 
-RUN zypper --non-interactive install ruby
+RUN zypper --non-interactive install curl
 
-RUN gem install bundler
+RUN zypper --non-interactive install tar which
+
+RUN zypper --non-interactive install ca-certificates-mozilla
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable --ruby
+
+# OpenSUSE is a bit crazy and ignores .bashrc for login shell.
+RUN /bin/bash -l -c "echo '. /etc/profile.d/rvm.sh' >> ~/.profile"
+
+RUN /bin/bash -l -c 'gem install --update bundler'

tools/dockerfile/distribtest/ruby_ubuntu1204_x64/Dockerfile

@@ -29,6 +29,11 @@
 
 FROM ubuntu:12.04
 
-RUN apt-get update -y && apt-get install -y ruby-full
+RUN apt-get update -y && apt-get install -y curl
 
-RUN gem install bundler
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable --ruby
+
+RUN /bin/bash -l -c "echo '. /etc/profile.d/rvm.sh' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install --update bundler"

tools/dockerfile/distribtest/ruby_ubuntu1404_x64/Dockerfile

@@ -29,6 +29,11 @@
 
 FROM ubuntu:14.04
 
-RUN apt-get update -y && apt-get install -y ruby-full
+RUN apt-get update -y && apt-get install -y curl
 
-RUN gem install bundler
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable --ruby
+
+RUN /bin/bash -l -c "echo '. /etc/profile.d/rvm.sh' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install --update bundler"

tools/dockerfile/distribtest/ruby_wheezy_x64/Dockerfile

@@ -29,6 +29,13 @@
 
 FROM debian:wheezy
 
-RUN apt-get update && apt-get install -y ruby-full
+RUN apt-get update && apt-get install -y curl
 
-RUN gem install bundler
+RUN apt-get update && apt-get install -y procps
+
+# Install rvm
+RUN gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
+RUN \curl -sSL https://get.rvm.io | bash -s stable --ruby
+
+RUN /bin/bash -l -c "echo '. /etc/profile.d/rvm.sh' >> ~/.bashrc"
+RUN /bin/bash -l -c "gem install --update bundler"