Create an ASP.NET Core app in a Docker container from Docker Hub using Azure CLI

Artikel
04/26/2022
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This sample script creates a resource group, a Linux App Service plan, and an app. It then deploys an ASP.NET Core application using a Docker Container.

If you don't have an Azure subscription, create an Azure free account before you begin.

Prerequisites

Use the Bash environment in Azure Cloud Shell. For more information, see Azure Cloud Shell Quickstart - Bash.
If you prefer to run CLI reference commands locally, install the Azure CLI. If you are running on Windows or macOS, consider running Azure CLI in a Docker container. For more information, see How to run the Azure CLI in a Docker container.
- If you're using a local installation, sign in to the Azure CLI by using the az login command. To finish the authentication process, follow the steps displayed in your terminal. For additional sign-in options, see Sign in with the Azure CLI.
- When you're prompted, install Azure CLI extensions on first use. For more information about extensions, see Use extensions with the Azure CLI.
- Run az version to find the version and dependent libraries that are installed. To upgrade to the latest version, run az upgrade.

Sample script

Launch Azure Cloud Shell

The Azure Cloud Shell is a free interactive shell that you can use to run the steps in this article. It has common Azure tools preinstalled and configured to use with your account.

To open the Cloud Shell, just select Try it from the upper right corner of a code block. You can also launch Cloud Shell in a separate browser tab by going to https://shell.azure.com.

When Cloud Shell opens, verify that Bash is selected for your environment. Subsequent sessions will use Azure CLI in a Bash environment, Select Copy to copy the blocks of code, paste it into the Cloud Shell, and press Enter to run it.

Cloud Shell is automatically authenticated under the initial account signed-in with. Use the following script to sign in using a different subscription, replacing <Subscription ID> with your Azure Subscription ID. If you don't have an Azure subscription, create an Azure free account before you begin.

subscription="<subscriptionId>" # add subscription here

az account set -s $subscription # ...or use 'az login'

For more information, see set active subscription or log in interactively

To create the web app

# Create an ASP.NET Core app in a Docker container from Docker Hub
# set -e # exit if error
# Variable block
let "randomIdentifier=$RANDOM*$RANDOM"
location="East US"
resourceGroup="msdocs-app-service-rg-$randomIdentifier"
tag="deploy-linux-docker-app-only.sh"
appServicePlan="msdocs-app-service-plan-$randomIdentifier"
webapp="msdocs-web-app-$randomIdentifier"

# Create a resource group.
echo "Creating $resourceGroup in "$location"..."
az group create --name $resourceGroup --location "$location" --tag $tag

# Create an App Service plan in S1 tier
echo "Creating $appServicePlan"
az appservice plan create --name $appServicePlan --resource-group $resourceGroup --sku S1 --is-linux

# Create a web app. To see list of available runtimes, run 'az webapp list-runtimes --linux'
echo "Creating $webapp"
az webapp create --name $webapp --resource-group $resourceGroup --plan $appServicePlan  --runtime "NODE|14-lts"

# Copy the result of the following command into a browser to see the static HTML site.
site="http://$webapp.azurewebsites.net"
echo $site
curl "$site"

Configure Web App with a Custom Docker Container from Docker Hub

Create the following variable containing your GitHub information.

dockerHubContainerPath="<replace-with-docker-container-path>" #format: <username>/<container-or-image>:<tag>

Configure the web app with a custom docker container from Docker Hub.

az webapp config container set --docker-custom-image-name $dockerHubContainerPath --name $webApp --resource-group $resourceGroup

Copy the result of the following command into a browser to see the web app.
```
site="http://$webapp.azurewebsites.net"
echo $site
curl "$site"
```

Clean up resources

Use the following command to remove the resource group and all resources associated with it using the az group delete command - unless you have an ongoing need for these resources. Some of these resources may take a while to create, as well as to delete.

az group delete --name $resourceGroup

Sample reference

This script uses the following commands to create a resource group, App Service app, and all related resources. Each command in the table links to command specific documentation.

Command	Notes
`az group create`	Creates a resource group in which all resources are stored.
`az appservice plan create`	Creates an App Service plan.
`az webapp create`	Creates an App Service app.
`az webapp config container set`	Sets the Docker container for the App Service app.

Next steps

For more information on the Azure CLI, see Azure CLI documentation.

Additional App Service CLI script samples can be found in the Azure App Service documentation.