Glad you were able to get all set up! If you want to restart the container you can do the following:
docker ps
This will list all the active containers. Get the container id of the neo privnet, and remove it with:
docker rm {CONTAINER_ID}
If you are feeling extra fancy, you can checkout my other post on create bash scripts for these things ^^
https://steemit.com/neo/@z0yo/neo-smart-contracts-workflow-improvements