@@ -29,6 +29,10 @@ wait_for_lxc_system_init() {
   done
 }
 
+patch_system_config() {
+  :
+}
+
 ensure_system_config() {
   # Exec first-run if not yet started. E.g. for testing in docker containers.
   if [[ ! -f "/etc/active_slot" ]]; then
@@ -118,6 +122,7 @@ ensure_system_config() {
       /sbin/reboot
     fi
   fi
+  patch_system_config "${CONFIG_PATH}"
 }
 
 check_schema_system_json() {
@@ -725,6 +730,14 @@ start_guest_tools() {
   esac
 }
 
+init_pre() {
+  :
+}
+
+init_post() {
+  :
+}
+
 main() {
   set -x
 
@@ -741,6 +754,8 @@ main() {
     state jq '.starting = true'
   fi
 
+  init_pre
+
   prepare_data_volume
 
   ensure_docker_config_json
@@ -767,6 +782,8 @@ main() {
 
   start_guest_tools
 
+  init_post
+
   exit 0
 }