--- /dev/null
+# Build
+
+ cd ruby
+ docker build -t leapcode/ruby:2.1-slim .
+
+# Push images
+
+ docker logout
+ docker login -u leapcode
+ docker push leapcode/ruby:2.1-slim
--- /dev/null
+# start with a fresh official ruby image
+# https://hub.docker.com/_/ruby/
+FROM ruby:2.1-slim
+
+MAINTAINER LEAP Encryption Access Project <info@leap.se>
+LABEL Description="Ruby 2.1 including sudo and build tools to build leap_cli etc" Vendor="LEAP" Version="1.0"
+
+# for unknown reason, "rake install" fails in docker, even if the userid is 0
+# so we need to install sudo to use "sudo rake install"
+RUN apt-get update
+RUN apt-get -y install sudo
+
+# install leap_cli prerequisites, see https://0xacab.org/leap/leap_cli
+RUN apt-get -y install git ruby ruby-dev rsync openssh-client openssl rake gcc make zlib1g-dev
+