YAML builds in Azure Pipelines

commonbuild.yml

parameters:
  services: []

jobs:
- job: Build
  pool:
    name: Hosted Ubuntu 1604
  
  steps:  
  - task: Docker@1
    displayName: 'Login to the ACR'
    inputs:
      azureSubscriptionEndpoint: 'some-random-guid'
      azureContainerRegistry: 'myazuredevopsinstance.azurecr.io'
      command: login 
  - ${{ each service in parameters.services }}:      
    - bash: |
       docker pull ${{ service.tagName }}:builder || true
       docker build --target build --cache-from ${{ service.tagName }}:builder -f ${{ service.dockerfileName }} -t ${{ service.tagName }}:builder --build-arg PAT=$TOKEN . 
       docker pull ${{ service.tagName }}:latest || true
       docker build --cache-from ${{ service.tagName }}:builder --cache-from ${{ service.tagName }}:latest -f ${{ service.dockerfileName }} -t ${{ service.tagName }}:${{ service.version }} -t ${{ service.tagName }}:latest --build-arg PAT=$TOKEN .
       docker push ${{ service.tagName }}:builder
       docker push ${{ service.tagName }}:${{ service.version }}
       docker push ${{ service.tagName }}:latest
      displayName: 'Build, tag and push image'
      failOnStderr: true
      env:
        TOKEN: $(system.accesstoken)
  - task: CopyFiles@2
    displayName: 'Copy Files to: $(Build.ArtifactStagingDirectory)'
    inputs:
      Contents: '**/charts/**/*'
      TargetFolder: '$(Build.ArtifactStagingDirectory)'
  - task: PublishBuildArtifacts@1
    displayName: 'Publish Artifact: charts'
    inputs:
      ArtifactName: charts