Automate light server

Co-authored-by: J <j@jsts.xyz>

playbooks/roles/add_apt_repository/meta/argument_specs.yml

@@ -0,0 +1,25 @@
+---
+argument_specs:
+  main:
+    short_description: Add a 3rd party apt repository to the system
+    options:
+      add_apt_repository__https_repo:
+        description: The repository URL uses HTTPS
+        required: true
+        type: bool
+      add_apt_repository__keyring_url:
+        description: URL to the repository's keyring
+        required: true
+        type: str
+      add_apt_repository__keyring_path:
+        description: Path where to store the keyring
+        required: true
+        type: str
+      add_apt_repository__repo:
+        description: The apt source line
+        required: true
+        type: str
+      add_apt_repository__filename:
+        description: Filename in /etc/apt/sources.list.d/
+        required: true
+        type: str

playbooks/roles/add_apt_repository/tasks/main.yml

@@ -0,0 +1,23 @@
+---
+- name: Check OS family
+  ansible.builtin.fail:
+    msg: "Can only add apt repositories on Debian-based systems!"
+  when: ansible_facts.os_family != "Debian"
+- name: Install required apt packages for adding an apt repository
+  ansible.builtin.apt:
+    name:
+      - ca-certificates
+      - gnupg
+- name: Install apt-transport-https if https repository
+  ansible.builtin.apt:
+    name: apt-transport-https
+  when: add_apt_repository__https_repo
+- name: Add repository signing key to keychain
+  ansible.builtin.apt_key:
+    url: "{{ add_apt_repository__keyring_url }}"
+    keyring: "{{ add_apt_repository__keyring_path }}"
+    state: present
+- name: Add repository and update cache
+  ansible.builtin.apt_repository:
+    repo: "{{ add_apt_repository__repo }}"
+    filename: "{{ add_apt_repository__filename }}"