Docker image build for building nRF Connect SDK applications

I am trying to create a docker image using this below GitHub example with whole nRF VS Code development environment.

https://github.com/NordicPlayground/nrf-docker

After creation of docker container, although I see nRF SDK is installed in the directory "/workdir/". But VS Code's nRF connect extension unable to find NRF SDK in the container.

Could you please suggest any configuration or path setting required in order to detect installed NRF SDK?

Thanks,

Prateek