split into roles

roles/signal/tasks/main.yml

@@ -0,0 +1,18 @@
+- name: Get Signal APT key
+  become: true
+  get_url:
+    url: https://updates.signal.org/desktop/apt/keys.asc
+    dest: /etc/apt/trusted.gpg.d/signal.asc
+- name: Install Signal APT repository
+  become: true
+  apt_repository:
+    repo: "deb [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/signal.asc] https://updates.signal.org/desktop/apt xenial main"
+    state: present
+- name: Install Signal
+  become: true
+  apt:
+    state: latest
+    update_cache: yes
+    cache_valid_time: 86400 # One day
+    pkg:
+      - signal-desktop