rename ntfy stack to alerts

add apprise service to alerts stack

ansible/roles/alerts/tasks/main.yml

@@ -0,0 +1,20 @@
+- name: Create working directory
+  file:
+    path: /srv/alerts
+    state: directory
+
+- name: Copy server config
+  copy:
+    src: "{{ role_path }}/ntfy_server.yml"
+    dest: /srv/alerts/ntfy_server.yml
+
+- name: Copy Docker stack file
+  template:
+    src: "{{ role_path }}/docker-stack.yml"
+    dest: /srv/alerts/docker-stack.yml
+
+- name: Deploy Docker stack
+  docker_stack:
+    name: alerts
+    compose:
+      - /srv/alerts/docker-stack.yml