How to use "ibmcloud" command on open-tool-chain pipeline.yml

Question

I'd like to use "ibmcloud" command on devops tool-chain pipeline.yml

can I use this?

I tryed, but pipeline runned not displaying regions

"ibm cloud regions" command sample run.

pipeline build environment no included ibmcloud commands??

stages: 
    jobs: 
      - name: dev
        type: deployer
        script: |-
            #!/bin/bash                        
            ibmcloud regions