Allow user to pass the IP that xhost will add to the list.

User case:

• launch dockeri on my local machine
• run on a remote target server
• get the gui on the Xserver instance running on my local machine.

Possible ideas to manage remote instance of docker :

• docker-machine How To Provision and Manage Remote Docker Hosts with Docker Machine on Ubuntu 16.04 | DigitalOcean
• -H flag Connect to another host with your docker client, without modifying your local Docker installation
• docker REMOTE API:
  • Docker Engine API v1.26 Reference
  • Examples using the Docker Engine SDKs and Docker API | Docker Documentation
  • Docker Tutorial Series, Part 8: Docker Remote API