Azure DevOps - cannot run installed dotnet tool

Question

I tried to run the dotnet tool installed in Azure DevOps and test the tool.

Locally

dotnet tool install dotnetsay -g
dotnetsay test

It works seamlessly without any problem.

When I run this script in Azure DevOps.

  - task: CmdLine@2
    displayName: 'Install dotnetsay'
    inputs:
      script: 'dotnet tool install dotnetsay -g'

  - task: CmdLine@2
    displayName: 'Run dotnetsay'
    inputs:
      script: 'dotnetsay test'

It returns this error.

/home/vsts/work/_temp/8a35f36d-4eff-4541-9aae-cf3f063f9180.sh: line 1: dotnetsay: command not found
##[error]Bash exited with code '127'.

I've tried 3 different tools:

• dotnetsay
• ef
• fm

all of them gave the same result 

Is there any additional command to make the dotnet tool available for Azure DevOps?

Answer 1

Add an initial UseDotNet task to set up the .NET SDK. This makes it clear which version you are expecting and ensures that you're building with that version.

The code:
- task: UseDotNet@2
  enabled: true
  inputs:
    packageType: 'sdk'
    version: 3.x

The dotnet tool dotnetsay first checks to see if the input is redirected. If it is, it reads input from the console. The input and output for the Azure DevOps pipeline agent are redirected. Consequently, the task will block on this line awaiting input. You will need to either cancel the Job or wait for it to time out.