Tag a Docker container as latest in Azure DevOps

Question

I'm trying to build a Docker container and push it to Azure Container Registry. For that, I created this azure-pipeline.yml

# Docker  
# Build and push an image to Azure Container Registry  
# https://learn.microsoft.com/azure/devops/pipelines/languages/docker  
 
trigger:  
- main  
 
resources:  
- repo: self  
 
variables:  
  # Container registry service connection established during pipeline creation  
  dockerRegistryServiceConnection: '...'  
  imageRepository: 'mycontainer'  
  containerRegistry: 'azuk.azurecr.io'  
  dockerfilePath: '$(Build.SourcesDirectory)/dockerfile'  
  tag: '$(Build.BuildId)'  
 
  # Agent VM image name  
  vmImageName: 'ubuntu-latest'  
 
stages:  
- stage: Build  
  displayName: Build and push stage  
  jobs:  
  - job: Build  
    displayName: Build  
    pool:  
      vmImage: $(vmImageName)  
    steps:  
    - task: Docker@2  
      displayName: Build and push an image to container registry  
      inputs:  
        command: buildAndPush  
        repository: $(imageRepository)  
        dockerfile: $(dockerfilePath)  
        containerRegistry: $(dockerRegistryServiceConnection)  
        tags: |  
          $(tag)  

The pipeline is working. Now, I have another Azure pipeline that build another container but the base is the first container. For this reason, in the Dockerfile in the first line I added

FROM azuk.azurecr.io/mycontainer  

When the pipeline starts, I get an error

manifest for ***/mycontainer:latest not found: manifest unknown: manifest tagged by "latest" is not found

I can't find a way to tell the ACR that the last push is the latest version. I saw few posts where they use the property includeLatestTag that doesn't exist anymore

- stage: Build  
  displayName: Build image  
  jobs:    
  - job: DockerImage  
    displayName: Build and push Docker image  
    steps:  
    - task: Docker@1  
      displayName: 'Build the Docker image'  
      inputs:  
        containerregistrytype: 'Container Registry'  
        dockerRegistryEndpoint: 'Docker Hub'  
        command: 'Build an image'  
        dockerFile: '**/Dockerfile'  
        imageName: '$(ImageName)'  
        includeLatestTag: true  
        useDefaultContext: false  
        buildContext: '.'  

How can I add the tag latest to the Docker container and push it to the Azure Container Registry via a Azure DevOps pipeline?

Answer 1

@Enrico Rossini

Welcome to Microsoft Q&A Platform, thanks for posting your query here.

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Hope that helps.