az containerapp exec is throwing exception in azure cli task of azure devops pipeline

This is a known issue/limitation for "az containerapp exec" and "az container exec" commands as they are interactive mode. So, the commands cannot work when running in Azure Pipelines with non-interactive mode.

See below articles:

• az containerapp exec fails to run shell scripts in non-interactive environment
• az container exec: Not a tty

As a workaround has been mentioned in above articles, you can try to run the following command line using the Azure CLI task on an Ubuntu agent (e.g., ubuntu-latest). I have tested this command line in pipeline, and it can work fine.

script -q -c 'az containerapp exec --name test --resource-group test-RG --command"/bin/shpostbuild.sh"'

Use AzureCLI@2 task with bash (Shell) on Ubuntu agent.

- task: AzureCLI@2
  displayName: 'Azure CLI'
  inputs:
    azureSubscription: {ARM Service Connection}
    scriptType: bash
    scriptLocation: inlineScript
    inlineScript: 'script -q -c ''az containerapp exec --name test --resource-group test-RG --command"/bin/shpostbuild.sh"'''

Or use AzureCLI@2 task with pscore (PowerShell Core) on Ubuntu agent.

- task: AzureCLI@2
  displayName: 'Azure CLI'
  inputs:
    azureSubscription: {ARM Service Connection}
    scriptType: pscore
    scriptLocation: inlineScript
    inlineScript: 'script -q -c ''az containerapp exec --name test --resource-group test-RG --command"/bin/shpostbuild.sh"'''