add tailscale to backup role

roles/backup/tasks/software/packages_utilities.yml

@@ -20,4 +20,37 @@
     state: latest
     name:
       - mariadb-client
-  when: ansible_distribution in [ "Debian", "Ubuntu", "Linux Mint" ]
+  when: ansible_distribution in [ "Debian", "Ubuntu", "Linux Mint" ]
+
+- name: backup | tailscale | install tailscale (arch)
+  tags: packages,system,system setup,tailscale
+  package:
+    name: tailscale
+    state: latest
+  when: ansible_distribution == "Archlinux"
+
+- name: backup | tailscale | install prerequisites (debian-based)
+  tags: packages,system,system setup,tailscale
+  apt:
+    name:
+      - apt-transport-https
+      - ca-certificates
+    state: present
+  when: ansible_distribution in [ "Debian", "Ubuntu", "Linux Mint" ]
+
+- name: backup | tailscale | add tailscale apt key (debian-based)
+  tags: packages,system,system setup,tailscale
+  get_url:
+    url: "https://pkgs.tailscale.com/stable/{{ ansible_distribution | lower }}/{{ ansible_distribution_release }}.noarmor.gpg"
+    dest: /usr/share/keyrings/tailscale-archive-keyring.gpg
+    mode: '0644'
+  when: ansible_distribution in [ "Debian", "Ubuntu", "Linux Mint" ]
+
+- name: backup | tailscale | add tailscale repository (debian-based)
+  tags: packages,system,system setup,tailscale
+  apt_repository:
+    repo: "deb [signed-by=/usr/share/keyrings/tailscale-archive-keyring.gpg] https://pkgs.tailscale.com/stable/{{ ansible_distribution | lower }} {{ ansible_distribution_release }} main"
+    state: present
+    filename: tailscale
+  when: ansible_distribution in [ "Debian", "Ubuntu", "Linux Mint" ]
+  notify: update apt cache