Add the required packages of the build environment

Need these pre-requisites in order to install ruby in rbenv

Author: somewatson

root/etc/s6-overlay/s6-rc.d/init-mod-code-server-rbenv-add-package/run

@@ -11,3 +11,15 @@ if ! dpkg -s git >/dev/null 2>&1; then
 else
     echo "**** git already installed, skipping ****"
 fi
+
+# List comes from: https://github.com/rbenv/ruby-build/wiki#ubuntudebianmint
+echo "Adding the required packages of the build environment for rbenv ruby-build "
+echo "\
+        autoconf \
+        build-essential \
+        libffi-dev \
+        libgmp-dev \
+        libssl-dev \
+        libyaml-dev \
+        rustc \
+        zlib1g-dev" >> /mod-repo-packages-to-install.list