CentOS 7.8.2003 + Ruby 2.3.0 Dockerfile

Dockerfile

FROM centos:centos7.8.2003

RUN yum install -y git gcc gcc-c++ make openssl-devel bzip2 wget && \
  cd ~/ && mkdir tmp && cd tmp && \
  wget -O ruby-install-0.7.0.tar.gz https://github.com/postmodern/ruby-install/archive/v0.7.0.tar.gz && \
  tar -xzvf ruby-install-0.7.0.tar.gz && \
  cd ruby-install-0.7.0/ && \
  make install
RUN ruby-install ruby 2.3.0

ENV PATH=/opt/rubies/ruby-2.3.0/bin:$PATH

RUN gem update --system && gem install rake bundler

test.sh

#!/bin/bash

set -eu

docker build -f Dockerfile -t ruby230-centos780-2300:local .
docker run --rm -it -v $(pwd):/gem -w /gem ruby230-centos780-2300:local bash