Dockerfile

FROM ubuntu:latest

# See https://github.com/oracle/truffleruby/blob/master/tool/docker-configs.yaml.
RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
  make \
  gcc \
  libssl-dev \
  libz-dev \
  ca-certificates \
  aria2

# As recommended in https://hub.docker.com/_/ruby/.
ENV LANG C.UTF-8
ENV BUNDLE_JOBS 4
ENV BUNDLE_SILENCE_ROOT_WARNING 1

ARG ruby=truffleruby-20.1.0-linux-amd64
ARG tarball=$ruby.tar.gz
ENV PATH "/$ruby/bin:$PATH"

# Mirror domain from https://github.com/rbenv/ruby-build/blob/master/bin/ruby-build.
# Checksum taken from https://github.com/rbenv/ruby-build/blob/master/share/ruby-build/truffleruby-20.1.0.
RUN aria2c -q -o $tarball https://dqw8nmjcqpjn7.cloudfront.net/aefae79abba2b21371754b103fba73d1b042f1ebc4a1b61fc0ca87eb016ee9c3
RUN tar xzf $tarball && rm $tarball
RUN /$ruby/lib/truffle/post_install_hook.sh