How to publish docker image as an artifact in azure devops - azure

Question

I am building a Docker image in my Azure pipeline. Now, I want to push this image to multiple aws accounts(dev, stage, prod) depending on the configuration parameters. The problem is, image is not available in publish artifact. I came across this and this article during my research. I am confused about the solution regarding saving the docker image so it can be available in publish artifact. I have two specific questions:
How will I use the docker save command in Azure pipeline task after docker build. The available docker task doesn't have this command.
Is there any better way of doing this apart from saving an image.

Answer 1

How will I use the docker save command in Azure pipeline task after docker build. The available docker task doesn't have this command.
This related to the task version.
Steps: Add task docker->switch the task version to 0->select the option Run a Docker command, then we could run the docker save command, check the pic below.
Is there any better way of doing this apart from saving an image.
We recommend that you use this to upload the docker image as an artifact.

Answer 2

Nowadays the preferred way of writing pipelines is with yaml.
Please see my code on how to do it in a multistage pipeline with Artifactory docker registry.
If we are in master the the MY_ADDITIONAL_TAG will be also pushed.
trigger:
- master
resources:
- repo: self
variables:
tag: '$(Build.BuildId)'
stages:
- stage: Build
displayName: Build DevOps base image
jobs:
- job: Build_and_Push
steps:
- task: Docker#2
displayName: Build
inputs:
containerRegistry: ''
repository: 'MY_REPO/IMAGE'
command: 'build'
Dockerfile: 'PATH_TO_MY_DOCKERFILE'
tags: $(tag)
- task: Bash#3
displayName: Save Docker Image
inputs:
targetType: 'inline'
script: |
docker save MY_DOCKER_REPO_IMAGE_NAME:$(tag) -o $(Pipeline.Workspace)/MY_IMAGE_FILE.tar
- task: PublishPipelineArtifact#1
inputs:
targetPath: '$(Pipeline.Workspace)/MY_IMAGE_FILE.tar'
artifact: 'MY_ARTIFACT'
publishLocation: 'pipeline'
- stage: Push
displayName: Push DevOps base image
jobs:
- job: Push
steps:
- task: DownloadPipelineArtifact#2
inputs:
buildType: 'current'
artifactName: 'MY_ARTIFACT'
targetPath: '$(Pipeline.Workspace)'
- task: Bash#3
displayName: Load Docker Image
inputs:
targetType: 'inline'
script: |
docker load --input $(Pipeline.Workspace)/MY_IMAGE_FILE.tar
docker tag MY_DOCKER_REPO_IMAGE_NAME:$(tag) MY_DOCKER_REPO_IMAGE_NAME:MY_ADDITIONAL_TAG
- task: Docker#2
displayName: push development tags
inputs:
containerRegistry: 'MY_DOCKER_REGISTRY'
repository: 'MY_REPO/IMAGE'
command: 'push'
tags: |
$(tag)
- task: Docker#2
condition: eq(variables['Build.SourceBranch'], 'refs/heads/master')
displayName: push 0-devops tag
inputs:
containerRegistry: 'MY_ARTIFACT'
repository: 'MY_REPO/IMAGE'
command: 'push'
tags: |
MY_ADDITIONAL_TAG

Answer 3

After a lot of reserach I found this article which resolved my issue https://dev.to/n3wt0n/container-image-promotion-across-environments-build-artifact-5887
Note: We can manually add commands which are not present in the Docker task snippet available in Azure DevOps. This is also mentioned in the article and steps to do this.