Minikube install error with key for CLUSTER_PLATFORM

Most likely have done something obvious, but I do not know what to do!

Trying to get Big Data Cluster to work in Minikube, with big machine I have on Ubuntu 18 Desktop.
When running the mssqlctl command
pesmith@pesmith-HP-Z820-Workstation:~/.local/bin$ sudo ./mssqlctl cluster create --name "sqlbigdata"
[sudo] password for pesmith:
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NOTE: Cluster creation can take a significant amount of time depending on
configuration, network speed, and the number of nodes in the cluster.

Error processing command: "KeyError"
'CLUSTER_PLATFORM'

This was my lines in my .bashrc file that is setting the env vars

export ACCEPT_EULA="yes"
export CLUSTER_PLATFORM="minikube"

Any clues to the issue would be appreciated.

Paul

Start by reproducing the mssqlctl cluster create --name "sqlbigdata" command in Minikube on Ubuntu 18, using the environment variables shown in .bashrc. Trace where the CLUSTER_PLATFORM value is read and determine what the KeyError indicates; done means cluster creation no longer fails at this step.