Dumping the installation wizard and configuring admin from the command line

I am writing unattended install script for hub. After unpacking the tarball, I configure the service as folows:

./hub.sh configure \
  "--base-url={{ hub_base_url }}" \
  "--listen-port=8082" \
  "--data-dir={{ data_dir }}/hub" \
  "--logs-dir={{ logs_dir }}/hub" \
  "--temp-dir={{ temp_dir }}/hub" \
  "--backups-dir={{ backup_dir }}/hub" 

./hub.sh start \  
  --J-Djetbrains.jetpass.admin.restore=true \
  --J-Djetbrains.jetpass.admin.name=Administrator \
  --J-Djetbrains.jetpass.admin.login={{ hub_admin_user }} \
  --J-Djetbrains.jetpass.admin.password={{ hub_admin_pass }} \
  --J-Djetbrains.jetpass.admin.email={{ hub_admin_email }}

sleep 60

curl -X POST http://localhost:8082/api/wizard/wait/dump

sleep 60

./hub.sh stop

This works, but it has the downside that we are starting the service and relying on arbitrary timeouts.

1. Is there a way to set up the admin user without starting the service (ideally through 'configure' command).
2. Is there a way to dump the wizard and enable the HUB bundle without starting the service and posting a HTTP request?

Thanks,

Dimitar

P.S. no, we can't use the docker image because it requires root access and access to the public docker registry.