Docker extract files from container

azure-pipelines-api.yml

- task: Docker@2
  displayName: 'Build Api image'
  inputs:
    containerRegistry: '$(dockerRegistry)'
    repository: '$(dockerHub)/$(imageName)'
    Dockerfile: '$(workingDirectory)/Dockerfile-Api'
    tags: |
     $(tag)
     latest
    addPipelineData: false
    
- script: |
    docker create --name testcontainer '$(dockerHub)/$(imageName):$(tag)'
    docker cp testcontainer:/TestResults ./TestResults
    docker container stop testcontainer
    docker container rm testcontainer
  displayName: 'Get Api Test Results'