use systemd to make portainer persistent

roles/podman/handlers/main.yml

@@ -0,0 +1,8 @@
+---
+# handlers file for roles/podman
+
+- name: Reload systemd and restart Portainer pod
+  ansible.builtin.systemd:
+    name: pod-portainer.service
+    state: restarted
+    daemon_reload: yes

roles/podman/tasks/main.yml

@@ -59,7 +59,30 @@
     dest: "{{ podman_data_mount_point }}/compose/portainer/compose.yaml"
     mode: '0644'
 
-- name: Start Portainer container using podman-compose
+- name: Generate systemd service file for the Portainer pod
   ansible.builtin.command:
-    cmd: podman-compose up -d
-    chdir: "{{ podman_data_mount_point }}/compose/portainer"
+    # Führt 'podman-compose up' aus, um die Container zu erstellen (falls nicht vorhanden).
+    # Generiert dann eine systemd-Unit für den Pod, der von podman-compose erstellt wurde.
+    # Der Pod-Name entspricht dem Verzeichnisnamen ('portainer').
+    # '--new' erlaubt es systemd, die Container bei Bedarf neu zu erstellen.
+    cmd: podman-compose up -d && podman generate systemd --new --files --name portainer
+    chdir: "{{ podman_data_mount_point }}/compose/portainer"
+    creates: "{{ podman_data_mount_point }}/compose/portainer/pod-portainer.service"
+  register: generate_systemd
+  changed_when: generate_systemd.rc == 0 and "pod-portainer.service" in generate_systemd.stdout
+
+- name: Copy systemd service file to system location
+  ansible.builtin.copy:
+    src: "{{ podman_data_mount_point }}/compose/portainer/pod-portainer.service"
+    dest: "/etc/systemd/system/pod-portainer.service"
+    remote_src: yes
+    mode: '0644'
+  when: generate_systemd.changed
+  notify: Reload systemd and restart Portainer pod
+
+- name: Ensure Portainer pod service is enabled and started
+  ansible.builtin.systemd:
+    name: pod-portainer.service
+    state: started
+    enabled: yes
+    daemon_reload: yes