How to install ruby painlessly

ruby-installation

Painless Ruby Installation (Autoinstaller Ruby)

Features

•  Using rbenv Package Manager
•  Using rvm Package Manager
•  Support Docker Installation

Configuration

• Ruby Version

  DEFAULT_VERSION='2.4.2'
  

• Install with rbenv Package Manager

  DEFAULT_PACKAGE='rbenv'
  

• Install with rvm Package Manager

  DEFAULT_PACKAGE='rvm'
  

• Your Username & Path (Home)

  USERNAME='zeroc0d3'         (default: USERNAME=`echo $USER`)
  PATH_HOME='/home/zeroc0d3'  (default: PATH_HOME=`echo $HOME`)
  

• Bash (~/.bashrc) and/or ZSH (~/.zshrc) Configuration

  ### Path Ruby RBENV / RVM ###
  export RBENV_ROOT="$HOME/.rbenv"
  export RVM_ROOT="/usr/local/rvm"
  
  ### rbenv (Ruby) default ###
  if [ -d "$RBENV_ROOT" ] 
  then
    export PATH="$RBENV_ROOT/bin:${PATH}"
    eval "$(rbenv init -)"
    export PATH="$RBENV_ROOT/plugins/ruby-build/bin:$PATH"
    # export RAILS_ENV=staging
  else
    ### rvm (Ruby) - alternative ###
    if [ -d "$RVM_ROOT" ] 
    then
      export PATH="$PATH:$RVM_ROOT/bin"
      source $RVM_ROOT/scripts/rvm
  
      # set PATH alternatives using this:
      [[ -s "$RVM_ROOT/scripts/rvm"  ]] && source "$RVM_ROOT/scripts/rvm"
    fi 
  fi
  

Docker Installation

• From Image

  FROM zeroc0d3lab/centos-base-consul:latest
  

• Environment

  ENV RUBY_VERSION=2.4.2
  ENV RUBY_PACKAGE="rbenv"
  # ("rbenv" = using rbenv package manager, "rvm" = using rvm package manager)
  

• Create rootfs/root folder
• Copy all sources in this repo to rootfs/root folder
• Configure as root

  USERNAME='root'
  PATH_HOME='/root'
  

• Install Ruby in Dockerfile

  #-----------------------------------------------------------------------------
  # Prepare Install Ruby
  # -) copy .zshrc to /root
  # -) copy .bashrc to /root
  # -) copy installation scripts to /opt
  #-----------------------------------------------------------------------------
  COPY ./rootfs/root/.zshrc /root/.zshrc
  COPY ./rootfs/root/.bashrc /root/.bashrc
  COPY ./rootfs/root/ruby.sh /etc/profile.d/ruby.sh
  COPY ./rootfs/root/install_ruby.sh /opt/install_ruby.sh
  COPY ./rootfs/root/reload_shell.sh /opt/reload_shell.sh
  RUN sudo /bin/sh /opt/install_ruby.sh
  
  #-----------------------------------------------------------------------------
  # Copy package dependencies in Gemfile
  #-----------------------------------------------------------------------------
  COPY ./rootfs/root/Gemfile /opt/Gemfile
  COPY ./rootfs/root/Gemfile.lock /opt/Gemfile.lock
  
  #-----------------------------------------------------------------------------
  # Install Ruby Packages (rbenv/rvm)
  #-----------------------------------------------------------------------------
  COPY ./rootfs/root/gems.sh /opt/gems.sh
  RUN sudo /bin/sh /opt/gems.sh
  

Running Installation

•  Configure Ruby Version
•  Configure Package Manager
•  Configure Username & Path
•  Configure Bash (~/.bashrc) and/or ZSH (~/.zshrc)
• Type command:

  ./install_ruby.sh

Courtesy of zeroc0d3