azure pipeline – execute one of the stages in a container

When the entire pipeline is running on vmImage, is it possible to run one of the stages (Test) in Container?

In Azure Devops Yaml Pipeline, you could specify the container at the job level.

Then the job could run on the target container.

Here is a doc about the detailed information.

How to copy build artifacts from vmImage to run tests in Container?

In the previous stage, you could publish the build artifacts with the Publish Build Artifacts task.

In the stage (running job in the container), you could use the Download Build Artifacts task to download the artifacts to the container.

Finally, you could add the steps to test it.

Here is my sample:

resources:
  containers:
  - container: python
    image: python:3.8
trigger:
- none

   
stages:

  - stage: artifacts
    pool:
      vmimage:  ubuntu-latest
    jobs:
      - job: test123
        steps:
        - task: [email protected]
          inputs:
            PathtoPublish: '$(Build.Sourcesdirectory)'
            ArtifactName: 'drop'
            publishLocation: 'Container'
        - script: echo $(System.ArtifactsDirectory)

  - stage: testcontainer
    jobs:
      - job: test123
        container:  python
    
        steps:
        - task: [email protected]
          inputs:
            buildType: 'current'
            downloadType: 'single'
            artifactName: 'drop'
            downloadPath: '$(System.ArtifactsDirectory)'

        - script: |
            echo $(System.ArtifactsDirectory)
          displayName: 'Run a multi-line script'
 

Note: The container image is from Docker Hub, Azure Container Registry or another private container registry.

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