KD install with 502 response #11490

Expected Behavior

Follow the guide at KD docs, and should be able to use vagrant provider.

Current Behavior

At the end of the kd installation, I got
Error: error installing "Koding account": Starting new session failed. Want: 200 Got: 502
with
export KONTROLURL=http://xxxx.com/kontrol/kite; curl -sL https://sandbox.kodi.ng/c/d/kd | bash -s 4bbe0593

the same happens even with the port 8090 appended to the KONTROLURL
export KONTROLURL=http://xxx.com:8090/kontrol/kite; curl -sL https://sandbox.kodi.ng/c/d/kd | bash -s 4bbe0593

Steps to Reproduce (for bugs)

1. follow the guide using Docker-compose
2. login at http://xxx.com:8090/
3. get the kd command from dashboard
4. run it on another machine

Your Environment

• Version used: latest (from docker)