[enh] Use instance resolver to let using local services

scripts/install

@@ -141,7 +141,7 @@ ynh_app_setting_set --app=$app --key=wifi_device --value="${wifi_device}"
 ynh_app_setting_set --app=$app --key=wifi_channel --value=6
 ynh_app_setting_set --app=$app --key=ip6_firewall --value=1
 ynh_app_setting_set --app=$app --key=ip6_net --value="${ip6_net}"
-ynh_app_setting_set --app=$app --key=dns --value="2001:913::8,2001:910:800::12,80.67.188.188,80.67.169.12"
+ynh_app_setting_set --app=$app --key=dns --value="10.0.242.1"
 ynh_app_setting_set --app=$app --key=ip4_nat_prefix --value=10.0.242
 
 if [[ -z $wifi_device ]]; then