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Back to Deploy and operate containers on Azure App Service

Deploy containers to Azure App Service

Deploy using the Azure portal

Overview

The Azure portal provides a guided experience for creating a Web App for Containers. Use it when you want to configure settings visually and verify choices before you deploy.

Short notes (exam revision)

  • Create flow: Create a resource → search Web App → Create
  • Basics: subscription, resource group, app name, region
  • Publish = Container, OS = Linux (typical for custom containers)
  • Pick or create an App Service plan
  • Container tab configures the image source (ACR vs other registries)
  • ACR auth options in portal: Managed Identity (needs AcrPull) or Admin credentials

Create the web app

  1. In the Azure portal, select Create a resource and search for Web App
  2. Select Create and choose Web App
  3. On the Basics tab, configure subscription, resource group, app name, and region
  4. For Publish, select Container
  5. For Operating System, select Linux
  6. Select an App Service plan or create a new one
  7. Open the Container tab to configure the image source

Configure the container image

On the Container tab you specify where App Service pulls the image.

Azure Container Registry

  1. Image Source → Azure Container Registry
  2. Select your Registry (same-subscription registries appear automatically)
  3. Choose an Authentication method:
    • Managed Identity — user-assigned or system-assigned; identity must have AcrPull on the registry
    • Admin credentials — registry admin username/password; admin user must be enabled on ACR
  4. Select the Image and Tag to deploy

Other registries

  1. Image Source → Other container registries
  2. For private images, provide Server URL (example Docker Hub: https://index.docker.io/v1/)
  3. Enter Username and Password for private registries
  4. Enter the Full Image Name and Tag (for example nginx:latest or myuser/myapp:v1)

Use cases

  • First-time AI container deploy where you want to see every dropdown (registry, tag, auth) before commit
  • Comparing ACR managed identity vs admin credentials settings in the UI
  • Pulling a public Docker Hub sample image for a quick smoke test app

Exam tips

  • Publish = Container + Linux is the core portal pattern for custom images
  • Same-subscription ACR shows up in the dropdown automatically
  • Managed identity path implies AcrPull; admin path implies admin user enabled
  • “Other container registries” is how Docker Hub / GHCR appear in the portal wizard

Learn more