fix: provide randomized hostname, if no hostname set

Author: simonwalz

system/cuos/init.sh

@@ -90,10 +90,10 @@ prepare_data_volume() {
 }
 
 set_hostname() {
-  OLD_HOSTNAME="$(cat /etc/hostname)"
+  OLD_HOSTNAME="$(cat /etc/hostname 2>/dev/null)"
 
   SYSTEM_HOSTNAME="$(jq_config '.hostname // empty')"
-  if [[ -z "${SYSTEM_HOSTNAME}" && ! -f /etc/hostname ]]; then
+  if [[ -z "${SYSTEM_HOSTNAME}" && -z "${OLD_HOSTNAME}" ]]; then
       local r1 r2 hn
       r1=$(printf "%02X" $(( RANDOM % 256 )))
       r2=$(printf "%02X" $(( RANDOM % 256 )))

system/cuos/system-default.json

@@ -1,10 +1,2 @@
 {
-	"hostname": "cuos-system",
-	"update_registry": "gitlab.triovega.com:4567/securitygateway",
-	"update_registry_user": "securitygateway",
-	"update_registry_password": "",
-	"initial_image": "/app-system-dev/app-system-dev:development",
-	"initial_image_digest": "sha256:9576b02ce00d8a978992c62b0fe5ae57b9163f25445581ff3c40bbb6b492a7e1",
-	"os_image": "/base-system-docker-boot/base-system-docker-boot-base:development",
-	"os_image_digest": ""
 }