diff --git a/defaults/main.yml b/defaults/main.yml
index 2d2f010..73f71c6 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -16,7 +16,10 @@ nextcloud_version: 26.0.0
 nextcloud_uid: ''
 nextcloud_gid: ''
 
-nextcloud_systemd_required_services_list: ['docker.service']
+nextcloud_systemd_required_services_list: "{{ nextcloud_systemd_required_services_list_default + nextcloud_systemd_required_services_list_auto + nextcloud_systemd_required_services_list_custom }}"
+nextcloud_systemd_required_services_list_default: ['docker.service']
+nextcloud_systemd_required_services_list_auto: []
+nextcloud_systemd_required_services_list_custom: []
 
 nextcloud_base_path: "{{ nextcloud_base_path }}/nextcloud"
 nextcloud_config_path: "{{ nextcloud_base_path }}/config"
@@ -160,7 +163,9 @@ nextcloud_container_network: "{{ nextcloud_identifier }}"
 
 # A list of additional container networks that the container would be connected to.
 # The playbook does not create these networks, so make sure they already exist.
-nextcloud_container_additional_networks: []
+nextcloud_container_additional_networks: "{{ nextcloud_container_additional_networks_auto + nextcloud_container_additional_networks_custom }}"
+nextcloud_container_additional_networks_auto: []
+nextcloud_container_additional_networks_custom: []
 
 nextcloud_database_type: postgres
 nextcloud_database_hostname: ''