nthachus/rvm-debian repository overview

docker run -it nthachus/rvm-debian:stable-stretch bash -l -c "rvm install 2.3; irb"

ARG RVM_RUBY_VERSIONS="2.3 jruby"
FROM nthachus/rvm-debian:stable-stretch

ARG ruby_version

RUN mkdir -p /usr/src/app && chown -R ${RVM_USER} /usr/src/app
WORKDIR /usr/src/app
USER ${RVM_USER}

# Install dependencies
COPY Gemfile *.gemspec ./
RUN ( [ -z "${ruby_version}" ] || rvm use --default "${ruby_version}" ) \
 && bundle install && rm -rf ~/.bundle ~/.gem

COPY --chown=${RVM_USER} . .

CMD ["/bin/bash", "-l", "-c", "bundle exec rake"]

docker build --rm -t app --build-arg ruby_version=jruby
docker run --rm -it app