Added a basic template for the debian11 VM.

README.org

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+* debian11-template
+It's a simple configuration for debian11 using Vagrant and Ansible.
+
+* Using
+⚠ W️ARNING ⚠️
+Setup virt-manager, QEMU and libvirt for using configuration.
+
+I'm using nix-shell for running vagrant and ansible.
+You can just install them to your host or install nix for using nix-shell.
+
+Open a shell in the repository folder.
+Run to open the VM:
+#+BEGIN_SRC shell
+  nix-shell
+  vagrant up
+  vagrant ssh
+#+END_SRC
+
+To close:
+#+BEGIN_SRC shell
+  logout
+  vagrant halt
+#+END_SRC
+
+To remove VM:
+#+BEGIN_SRC shell
+  vagrant destroy
+#+END_SRC
+

Vagrantfile

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+Vagrant.configure("2") do |config|
+  config.vm.provider :libvirt do |libvirt|
+    libvirt.driver = "kvm"
+  end
+
+  config.vm.define "main" do |subconfig|
+    subconfig.vm.box = "generic/debian11"
+    subconfig.vm.hostname = "debian11-ansible-vm"
+
+    subconfig.vm.provider :libvirt do |domain|
+      domain.memory = 4096
+      domain.cpus = 1
+    end
+
+    subconfig.vm.provision "ansible" do |ansible|
+      ansible.verbose = "v"
+      ansible.playbook = "main_playbook.yaml"
+    end
+  end
+end

main_playbook.yaml

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+---
+- hosts: all
+  become: yes
+  tasks:
+  - name: Update apt cache
+    apt:
+      update_cache: yes
+
+  - name: Upgrade all packages
+    apt:
+      upgrade: dist
+      autoremove: yes
+      autoclean: yes
+  - name: install neofetch
+    apt:
+      name:
+        - neofetch
+  - name: install docker
+    apt:
+      name:
+        - docker
+        - docker-compose

shell.nix

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+{ pkgs ? import <nixpkgs> { } }:
+pkgs.mkShell {
+  name = "VagrantShell";
+  buildInputs = with pkgs; [
+    vagrant
+    ansible
+  ];
+
+  shellHook = ''
+      echo "Welcome to vagrant shell";
+  '';
+}