Creating a network of multiple virtual machine with Vagrant

Vagrantfile-Multi-VM.rb

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

Vagrant.configure("2") do |config|

  config.vm.define "api-vm" do |api|
    api.vm.hostname = "api-vm"
    api.vm.box = "ubuntu/bionic64"
    api.vm.network "private_network", ip: "10.0.0.10"
    api.vm.network "forwarded_port", guest: 80, host: 5030
    api.vm.synced_folder ".", "/home/vagrant/project-api", owner: "postgres",
    group: "vagrant", mount_options:["dmode=775,fmode=664"]

    api.vm.provider "virtualbox" do |vb|
      vb.name = "api-vm"
      vb.gui = false
      vb.memory = "1024"
      vb.cpus = 3
    end

    api.vm.provision "shell", run: "always", inline: <<-SHELL
      apt-get update
      apt-get install git
      sudo apt install curl
      curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
      sudo apt-get install -y nodejs
      sudo npm install -y node-gyp -g
      apt-get install -y postgresql postgresql-contrib
      git clone https://github.com/marcdomain/Fast-Food-Fast.git
      cd Fast-Food-Fast

      sudo npm install

      source .env

      npm run createTables

      npm start
        echo "API VM is up and running"
    SHELL
  end

  config.vm.define "client-vm" do |client|
    client.vm.hostname = "client-vm"
    client.vm.box = "bento/ubuntu-16.04"
    client.vm.network "private_network", ip: "10.0.0.20"
    client.vm.network "forwarded_port", guest: 80, host: 5020
    client.vm.synced_folder ".", "/home/vagrant/bootcamp-project", owner: "vagrant",
    group: "vagrant", mount_options:["dmode=775,fmode=664"]

    client.vm.provider "virtualbox" do |vb|
      vb.name = "client-vm"
      vb.gui = false
      vb.memory = "1024"
      vb.cpus = 2
    end

    client.vm.provision "shell", run: "always", inline: <<-SHELL
      apt-get update
      apt-get install -y make git curl nfs-common build-essential
      curl -sL https://deb.nodesource.com/setup_10.x | sudo -E bash -
      sudo apt-get install -y nodejs
      sudo npm install -y node-gyp -g
      git clone https://github.com/marcdomain/REACTJS-Fast-Food-Fast.git
      cd REACTJS-Fast-Food-Fast
      sudo npm install
      npm run build
      npm start
        echo "Client VM is up and running"
    SHELL
  end

  # Install avahi on all machines (for newtwoking purpose)
  config.vm.provision "shell", run: "always", inline: <<-SHELL
    sudo apt-get install -y avahi-daemon libnss-mdns
  SHELL
end