GitBashを使ってvagrant upしてもうまくcentos7.3がインストールできない

お世話になります
いまPowerShellではなくGitBashを使ってCentOSをinstallしようと思っていますがうまく動かないのはなぜでしょうか？
環境は
Win10、VirtualBox5.2.8, vagrant2.2.3, git2.21.0です
Ｃ直下にVagrantフォルダを作りその中にvagrantfileを配置しました
vagrant upしても正しくinstallできませんGem installedもでません
vagrant sshしてruby -v→not foundとなります
どこに原因があるのでしょうか？
よろしくご指導ください(4回ぐらい繰り返してやっていますが駄目です）
学習しているのはhttp://schoo.jp/class/3774/room#で40分ぐらいからの部分です
Vagrantfileの内容は変更しています

vagrantfile

# -*- mode: ruby -*-
# vi: set ft=ruby :

# All Vagrant configuration is done below. The "2" in Vagrant.configure
# configures the configuration version (we support older styles for
# backwards compatibility). Please don't change it unless you know what
# you're doing.
Vagrant.configure("2") do |config|
  # The most common configuration options are documented and commented below.
  # For a complete reference, please see the online documentation at
  # https://docs.vagrantup.com.

  # Every Vagrant development environment requires a box. You can search for
  # boxes at https://atlas.hashicorp.com/search.
  config.vm.box = "bento/centos-7.3"
  config.ssh.insert_key = false

  # Disable automatic box update checking. If you disable this, then
  # boxes will only be checked for updates when the user runs
  # `vagrant box outdated`. This is not recommended.
  # config.vm.box_check_update = false

  # Create a forwarded port mapping which allows access to a specific port
  # within the machine from a port on the host machine. In the example below,
  # accessing "localhost:8080" will access port 80 on the guest machine.
  # config.vm.network "forwarded_port", guest: 80, host: 8080
  config.vm.network :"forwarded_port", guest: 3000, host: 3000

  # Create a private network, which allows host-only access to the machine
  # using a specific IP.
  config.vm.network "private_network", ip: "192.168.33.17"

  # Create a public network, which generally matched to bridged network.
  # Bridged networks make the machine appear as another physical device on
  # your network.
  # config.vm.network "public_network"

  # Share an additional folder to the guest VM. The first argument is
  # the path on the host to the actual folder. The second argument is
  # the path on the guest to mount the folder. And the optional third
  # argument is a set of non-required options.
  config.vm.synced_folder ".", "/vagrant", type: "virtualbox"

  # Provider-specific configuration so you can fine-tune various
  # backing providers for Vagrant. These expose provider-specific options.
  # Example for VirtualBox:
  #
  # config.vm.provider "virtualbox" do |vb|
  #   # Display the VirtualBox GUI when booting the machine
  #   vb.gui = true
  #
  #   # Customize the amount of memory on the VM:
  #   vb.memory = "1024"
  # end
  #
  # View the documentation for the provider you are using for more
  # information on available options.

  # Define a Vagrant Push strategy for pushing to Atlas. Other push strategies
  # such as FTP and Heroku are also available. See the documentation at
  # https://docs.vagrantup.com/v2/push/atlas.html for more information.
  # config.push.define "atlas" do |push|
  #   push.app = "YOUR_ATLAS_USERNAME/YOUR_APPLICATION_NAME"
  # end

  # Enable provisioning with a shell script. Additional provisioners such as
  # Puppet, Chef, Ansible, Salt, and Docker are also available. Please see the
  # documentation for more information about their specific syntax and use.
  config.vm.provision "shell", inline: <<-SHELL
    yum update -y
    # utils
    yum install -y git wget curl jq
    # ruby-build libraries
    # cf. https://github.com/rbenv/ruby-build/wiki
    yum install -y gcc bzip2 openssl-devel libyaml-devel libffi-devel readline-devel zlib-devel gdbm-devel ncurses-devel
    # for Rails
    yum install -y sqlite sqlite-devel
    yum install -y epel-release
    yum install -y nodejs npm --enablerepo=epel
    # update Vbox Guest Addition
    yum install -f gcc make kernel-devel
    /etc/init.d/vboxadd setup
  SHELL

  config.vm.provision "shell", privileged: false, inline: <<-SHELL
    # install rbenv
    # cf. https://github.com/rbenv/rbenv
    if ! test -d ~/.rbenv ; then
      git clone https://github.com/rbenv/rbenv.git ~/.rbenv
      echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
      echo 'if which rbenv > /dev/null; then eval "$(rbenv init -)"; fi' >> ~/.bash_profile
    fi

    # install ruby-build
    # cf. https://github.com/rbenv/ruby-build
    if ! test -d ~/.rbenv/plugins/ruby-build ; then
      git clone https://github.com/rbenv/ruby-build.git ~/.rbenv/plugins/ruby-build
    fi

    # rehash to load rbenv
    source ~/.bash_profile
    hash -r

    # install ruby
    rbenv install 2.6.2
    rbenv global 2.6.2
    rbenv rehash

    # install bundler
    gem install bundler
  SHELL
End

退会済みユーザー

2019/05/27 07:35

コードの貼り方勉強してね。編集画面で、コード箇所を選択してから、「code」ボタンクリックでいいはずなんだが。見づらいうちはポジティブなコメントがつかないものだと思っておいたほうがいいよ。

asm

2019/05/27 07:45

Git bashで動かないと言われても、vagrant側が想定している環境とズレてるせいじゃないの？って気がするコマンドプロンプトやPowershellではいけない理由でもあるのですか？

Casablanca_mtg

2019/05/27 09:24

修正致しました。申し訳ございません GgitBashでも使えるようになりたいという理由からです最近はいろいろな人の動画で勉強することでやり方も勉強したいと思いSchooでも勉強していますがVagrantFileにも記述のやり方で違った入り方があることを知りましたがErrorに悩まされていますもう少し頑張ってみます