Azure DevOps 管道 : Cannot find Docker Image when Pushing to Azure Registry, 'tag ***/appname'

Question

我们使用自定义 .sh 文件构建 docker 镜像。然后我们想将其推送到我们的 azure 注册表。我们的 azure 管道中有以下步骤:

    - task: Docker@2
      inputs:
        containerRegistry: 'someazureregistry'
        repository: 'appname'
        command: 'push'
        tags: 'latest'

构建成功，如下所示，它在 docker 中注册为 appname:latest ，但是由于某种原因，azure 找不到它，并要求提供带有标签 ***/应用程序名称。

/usr/bin/docker images
/usr/bin/docker push ***/appname:latest
REPOSITORY       TAG         IMAGE ID       CREATED                  SIZE
appname         latest      f1e11b4fc19c   Less than a second ago   680MB
ubuntu           20.04       a0ce5a295b63   7 days ago               72.8MB
...
The push refers to repository [***/appname]
An image does not exist locally with the tag: ***/appname
##[error]An image does not exist locally with the tag: ***/appname

我们尝试了不同的标签组合。 azure 在这里期待什么？

Answer 1

看起来您正在单独构建 Docker 镜像。请注意，需要在本地为私有(private)容器注册表标记容器镜像，然后才能推送。正如 Shayki Abramczyk 提到的，您需要使用 containerRegistry 构建镜像。

要解决此问题，您必须使用“docker tag ”命令和特定的私有(private)容器注册表来标记镜像。

例如:

docker tag image youoregistryhost:port/xxx/image-name:latest

此外，您可以在 Azure DevOps 管道中构建和推送 Docker 镜像。以下 YAML 文件供您引用:

variables:
  # Container registry service connection established during pipeline creation
  dockerRegistryServiceConnection: 'testacr'
  imageRepository: 'appname'
  containerRegistry: 'xxx.azurecr.io'
  dockerfilePath: '$(Build.SourcesDirectory)/app/Dockerfile'
  tag: 'latest'
  system.debug : true
  
  # 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)

当然，您也可以在 Azure DevOps 管道中单独构建和推送镜像，如下所示:

stages:
- stage: Build
  displayName: Build and push stage
  jobs:  
  - job: Build
    displayName: Build
    pool:
      vmImage: $(vmImageName)
    steps:
    - task: Docker@2
      displayName: Build an image for container registry
      inputs:
        containerRegistry: '$(dockerRegistryServiceConnection)'
        repository: '$(imageRepository)'
        command: 'build'
        Dockerfile: '$(dockerfilePath)'
        tags: 'latest'
    - task: Docker@2
      displayName: Push an image to container registry
      inputs:
        containerRegistry: '$(dockerRegistryServiceConnection)'
        repository: '$(imageRepository)'
        command: 'push'
        tags: 'latest'