FROM bitnami/ruby:2.5 as development FROM bitnami/minideb:jessie LABEL maintainer "Bitnami " COPY --from=development /opt/bitnami/ruby /opt/bitnami/ruby ENV BITNAMI_APP_NAME="ruby" \ BITNAMI_IMAGE_VERSION="2.5.0-r2" \ PATH="/opt/bitnami/ruby/bin:$PATH" CMD ["irb"]