Executing mlnet can't locate dotnet

**System Information (please complete the following information):**
- Model Builder or CLI Version:
- Visual Studio Version (if applicable): N/A

**Describe the bug**
- On which page of the tutorial did you run into an issue (URL): ML.NET Tutorial - Get started in 10 minutes
- Clear description of the problem: Running mlnet at the command line returns:

> You must install .NET to run this application.

> App: /home/dhild/.dotnet/tools/mlnet
> Architecture: x64
> App host version: 8.0.0
> .NET location: Not found

When I run 'which dotnet' I get '/usr/bin/dotnet', so both this and the reporting of the App host version says that .NET is properly installed.
**To Reproduce**
Steps to reproduce the behavior:
1. Go to bash console
2. Enter 'mlnet classification --dataset "yelp_labelled.txt" --label-col 1 --has-header false --name SentimentModel --train-time 60'
3. See error

**Expected behavior**
Shown in **Progress** at https://dotnet.microsoft.com/en-us/learn/ml-dotnet/get-started-tutorial/train

**Screenshots**
N/A

**Additional context**
None