Refactor Vagrant scripts and readme for gauntlt

Vagrantfile

@@ -1,18 +1,8 @@
 Vagrant.configure("2") do |config|
   config.vm.box = "bento/centos-7.5"
   config.vm.synced_folder ".", "/app"
+  config.vm.provision "shell", inline: "/app/bin/install-gauntlt.sh", upload_path: "/home/vagrant/install-gauntlt.sh"
   config.vm.provision "shell", inline: "/app/bin/install-ansible.sh", upload_path: "/home/vagrant/install-ansible.sh"
   config.vm.provision "shell", inline: "cd /app/ansible && ansible-playbook  -l localhost bakery.yml app-AfterInstall.yml app-StartServer.yml", upload_path: "/home/vagrant/apl.sh"
-  config.vm.provision "shell", inline: "curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -"
-  config.vm.provision "shell", inline: "curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import -"
-  config.vm.provision "shell", inline: "curl -L get.rvm.io | bash -s stable"
-  config.vm.provision "shell", inline: "source /etc/profile.d/rvm.sh"
-  config.vm.provision "shell", inline: "rvm reload"
-  config.vm.provision "shell", inline: "rvm requirements run"
-  config.vm.provision "shell", inline: "rvm install 2.6"
-  config.vm.provision "shell", inline: "rvm alias create default ruby-2.6.0"
-  config.vm.provision "shell", inline: "rvm list && rvm use 2.6 --default && ruby --version"
-  config.vm.provision "shell", inline: "yum -y install ruby-devel && gem install gauntlt" 
-  config.vm.provision "shell", inline: "yum -y install nmap"
   config.vm.network "forwarded_port", guest: 80, host: 6080, auto_correct: true
 end

bin/install-gauntlt.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+# Install gauntlt using rvm
+
+# Set bash unofficial strict mode http://redsymbol.net/articles/unofficial-bash-strict-mode/
+set -euo pipefail
+IFS=$'\n\t'
+
+# Set DEBUG to true for enhanced debugging: run prefixed with "DEBUG=true"
+${DEBUG:-false} && set -vx
+# Credit to https://stackoverflow.com/a/17805088
+# and http://wiki.bash-hackers.org/scripting/debuggingtips
+export PS4='+(${BASH_SOURCE}:${LINENO}): ${FUNCNAME[0]:+${FUNCNAME[0]}(): }'
+
+# Credit to http://stackoverflow.com/a/246128/424301
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+#shellcheck disable=SC1090
+. "$DIR/common.sh"
+
+function quick_yum_install() {
+    declare package
+    package=${1?"You must specify a package to install"}
+    if ! rpm -q  "$package" > /dev/null; then
+        sudo yum -y -q install "$package"
+    else
+        echo "$package already installed, skipping"
+    fi
+}
+
+quick_yum_install ruby-devel
+quick_yum_install nmap
+
+if [[ ! -f /etc/profile.d/rvm.sh ]]; then
+    curl -sSL https://rvm.io/mpapis.asc | gpg2 --import -
+    curl -sSL https://rvm.io/pkuczynski.asc | gpg2 --import -
+    curl -L get.rvm.io | bash -s stable
+    # rvm hates the bash options -eu
+    set +eu
+    #shellcheck disable=SC1091
+    source /etc/profile.d/rvm.sh
+    rvm reload
+    rvm requirements run
+else
+    echo "rvm already installed"
+fi
+# rvm hates the bash options -eu
+set +eu
+#shellcheck disable=SC1091
+source /etc/profile.d/rvm.sh
+rvm reload
+rvm install 2.6.0
+rvm alias create default ruby-2.6.0
+rvm list
+rvm use 2.6 --default
+set -eu
+if is_ec2; then
+    usermod -a -G rvm centos
+else
+    usermod -a -G rvm vagrant
+fi
+ruby --version
+
+if ! (gem list gauntlt | grep gauntlt > /dev/null); then
+    echo 'gem: --no-rdoc --no-ri' > ~/.gemrc
+    gem install gauntlt
+fi

gauntlt/readme.md

@@ -1,3 +1,11 @@
+# Running gauntlt
+
+## Vagrant
+You can run gauntlt through Vagrant:
+
+    vagrant up --provision
+    vagrant ssh  -c "cd /app/gauntlt && gauntlt"
+
 ##Attacks
 
 NMAP attacks taken from here: