Ruby

# from ol8

FROM oraclelinux:8

# install rbenv

RUN dnf install -y git gcc bzip2 openssl-devel readline-devel zlib-devel sqlite-devel make libffi-devel patch

RUN git clone https://github.com/rbenv/rbenv.git ~/.rbenv

# install ruby build

RUN git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build

RUN dnf list installed libffi

RUN dnf list installed libffi-devel

RUN curl -o /tmp/patch.txt https://patch-diff.githubusercontent.com/raw/ruby/ruby/pull/10696.patch

# install ruby

RUN eval "$(~/.rbenv/bin/rbenv init - bash)" && cat /tmp/patch.txt | rbenv install -v -p 3.1.5

# test ffi

RUN eval "$(~/.rbenv/bin/rbenv init - bash)" && rbenv shell 3.1.5 && gem install sys-uname && ruby -rsys/uname -e 'puts Sys::Uname.uname'