IP of Docker Container - Virtualbox + Windows

In order to expose your docker IP to your host machine, you need to set your VM Network Settings into "Bridged Adapter".

I use macOS but I think its the same in windows.

After that, check your VM IP. For example if your VM IP 192.168.30.100, and your docker run in port 8000. Now you can access your docker with IP 192.168.30.100:8000 from your host.