How to configure licence url for controller image 6.8.0

I installed neoload web onprimise inside docker containers (Version 1.8.1).

for the controller I use image with tag 6.8.0.

When a testset is uploaded to nlweb the test scripts are sent to the controller, but when the controller start I receive:
"Unable to lease a license [Unknown Error. No host specified for license server.] "

Environment variables are set:
env:

• name: MODE
value: Managed
• name: NEOLOADWEB_URL
value: http://nlweb:8080
• name: NEOLOADWEB_TOKEN
value: ${TOKEN}
• name: LEASE_SERVER
value: NLWEB
• name: ZONE
value: defaultzone

When I start a terminal inside the container, a
wget ${NEOLOADWEB_URL} shows the swagger-ui page.

what url do I have to set?

--- part of the controller log ----

2019/01/13 16:35:25 INFO - neoload.controller.agent.ControllerAgent: Controller Agent Status changed to: BUSY
2019/01/13 16:35:37 INFO - neoload.controller.agent.ControllerAgent: Controller Agent Status changed to: BUSY_DOWNLOADING_PROJECT
File = /tmp/963af328-a14a-4391-8b04-b31c3db29c43/demo_tst.nlp
2019/01/13 16:35:38 INFO - neoload.controller.agent.ControllerAgent: Controller Agent Status changed to: BUSY
2019/01/13 16:35:44 INFO - neoload.controller.agent.ControllerAgent: Controller Agent Status changed to: BUSY_DOWNLOADING_INFRASTRUCTURE
2019/01/13 16:35:44 INFO - neoload.controller.agent.ControllerAgent: Controller Agent Status changed to: BUSY
2019/01/13 16:35:48 INFO - neoload.controller.agent.ControllerAgent: Proxy settings retrieved successfully.
2019/01/13 16:35:56 INFO - neoload.controller.agent.ControllerAgent: Logging to /home/neoload/.neotys/neoload/v6.8/logs, as user: neoload
2019/01/13 16:36:10 INFO - neoload.controller.agent.ControllerAgent: Unable to lease a license [Unknown Error. No host specified for license server.]
2019/01/13 16:36:10 INFO - neoload.controller.agent.ControllerAgent: An error occurred during Controller initialization: null
2019/01/13 16:36:10 INFO - neoload.controller.agent.ControllerAgent: Controller is stopping
2019/01/13 16:36:10 INFO - neoload.controller.agent.ControllerAgent: Controller is stopped
2019/01/13 16:36:10 INFO - neoload.controller.agent.ControllerAgent: Controller Agent Status changed to: READY
2019/01/13 16:36:10 INFO - neoload.controller.agent.ControllerAgent: Controller agent is ready
2019/01/13 16:36:20 INFO - neoload.controller.agent.ControllerAgent: Controller is stopping
2019/01/13 16:36:20 INFO - neoload.controller.agent.ControllerAgent: Controller is stopped
2019/01/13 16:36:20 INFO - neoload.controller.agent.ControllerAgent: Controller agent is ready