Tutorials Microsoft Azure Tutorial

Push Image to ACR

Push Image to ACR: free step-by-step lesson with examples, common mistakes, and interview tips — part of Microsoft Azure Tutorial on Toolliyo Academy.

8 min read Updated 7/20/2026

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Microsoft Azure Tutorial · Lesson 29 of 120

Push Image to ACR

Foundations & App Service → Containers & AKS → DevOps & Security → Projects

Foundations & App Service · 1 — Host · ~6 min · Docker on Azure

What is this?

Azure Container Registry (ACR) stores your Docker images privately. Build locally (or in CI), tag with the ACR login server, then docker push.

Why should you care?

AKS and App Service for containers pull from ACR — without a registry you cannot run your own images at scale.

See it live — copy this example

Use an Azure lab/free subscription. Prefer Azure CLI or Portal. Delete idle App Service plans, SQL DBs, and AKS clusters when practice is done.

az acr create -g rg-cloudverse-dev -n acrcloudversedev --sku Basic
az acr login -n acrcloudversedev
docker tag cloudverse-api:local acrcloudversedev.azurecr.io/cloudverse-api:v1
docker push acrcloudversedev.azurecr.io/cloudverse-api:v1

What happened?

acr create makes the registry.
acr login authenticates Docker.
tag must include the login server name.

Practice next

Create an ACR (name must be globally unique, alphanumeric).
Build a local image for your API.
Tag and push v1.
Push a v2 tag.
Enable retention policy notes.

Remember

ACR holds private images. Tags matter for rollbacks. Prefer managed identity over admin user long-term.

Image ready for AKS

Pipeline must store builds somewhere Azure can pull.

Outcome: v1 image visible in ACR.

Interview prep for this lesson

Practice these questions aloud after reading—each links to a full structured answer.

Mid PDF Detailed

Process Incoming Orders (Queue Trigger) Scenario: When a customer places an order, the backend pushes a message to Azure Storage Queue.

zure Function processes it asynchronously. Trigger: QueueTrigger Use Case: Payment processing, inventory updates, email notifications. Code Example (C#) public class OrderProcessor { [FunctionName("ProcessOrder")] public…

Junior PDF Detailed

What is a build pipeline in Azure DevOps? Answer: A build pipeline in Azure DevOps automates how your code is compiled, tested, and packaged whenever you make changes. It’s part of Continuous Integration (CI) — where every code check-in triggers an automatic build to ensure nothing is broken. Example: When a developer pushes code to main, Azure Pipelines automatically compiles your .NET app, runs unit tests, and generates a build artifact (like a .zip or .dll) ready for deployment.

What is a build pipeline in Azure DevOps? Answer: A build pipeline in Azure DevOps automates how your code is compiled, tested, and packaged whenever you make changes. It’s part of Continuous Integration (CI) — where eve…

Mid PDF Detailed

Example scenario: When you push new code, SonarQube runs static analysis and flags issues like “missing null checks” or “unused variables” before the code gets merged. 4⃣ How do you ensure quality gates before deployment?

Quality gates are automated checks that your code must pass before it can be deployed. Typical gates: Code must pass all tests. Code coverage ≥ 80%. No critical SonarQube issues. Build must succeed. Ways to enforce them:…

Mid PDF Detailed

Example scenario: When you push new code, SonarQube runs static analysis and flags issues like “missing null checks” or “unused variables” before the code gets merged. 4⃣ How do you ensure quality gates before deployment? Follow:

Quality gates are automated checks that your code must pass before it can be deployed. Typical gates: Code must pass all tests. Code coverage ≥ 80%. No critical SonarQube issues. Build must succeed. Ways to enforce them:…

Mid PDF Detailed

Set policies like: ○ Require a minimum number of reviewers. ○ Build validation (run a pipeline before merging). ○ Limit who can push directly. ○ Require linked work items. Example: For main, you might set: ● 2 code reviewers minimum. ● Build must pass. ● No direct pushes (only PR merges). 4⃣ How do you enforce code reviews or pull request policies?

You enforce them with branch policies. zure DevOps lets you require: A minimum number of reviewers (e.g., 2). Approval from code owners. Successful builds before merge. Linked work items or comments resolved. Example: Wh…

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