Getting Started with Azure App Service Container

So you're interested in getting started with Azure App Service Container? First, understand that Azure App Service Container is a fully managed platform for deploying and managing containerized web applications.

To get started, you'll need to create an Azure App Service plan, which is the pricing and scaling plan for your app. This plan will determine the resources allocated to your app.

Next, you'll need to create a container instance, which is essentially a container that runs your app. This can be done using the Azure CLI or the Azure portal.

Azure App Service Container supports a variety of container runtimes, including Docker and Kubernetes. This means you can choose the runtime that best fits your needs.

To get started with Azure App Service Container, you'll need a few things in place.

First and foremost, you'll need an Azure subscription. This is a must-have for using any Azure services, including App Service Container.

You'll also need to install Docker and Azure App Service extensions. This will give you the tools you need to work with containers in Azure.

If you don't have a web application that produces a Docker image, don't worry! You can create one by following the instructions in the "Create a sample ASP .NET Core application" guide.

To push your container to Azure, you'll need a Docker Hub account or an instance of Azure Container Registry (ACR). This will give you a place to store and manage your container images.

To deploy your app to Azure App Service Container, you'll first need to push your image to a container registry. You can use either Azure Container Registry (ACR) or Docker Hub. To connect to the registry, open the Docker Explorer and select Connect Registry... icon under Registries group and follow the prompt.

Once you've connected to the registry, you can push your image to it. If your image hasn't been tagged, you'll be prompted to choose a registry to push to, and the image will be tagged based on the selection.

To deploy the image to Azure App Service, navigate to your image under Registries in the Docker Explorer, right-click on the tag, and select Deploy Image To Azure App Service... or Deploy Image to Azure Container Apps.... You'll then be prompted to provide the values for the App Service or Container App.

After deployment is complete, you'll see a notification with the website URL in Visual Studio Code. You can also see the results in the Output panel of Visual Studio Code, in the Docker section. To browse the deployed website, use Ctrl+click to open the URL in the Output panel.

Here's a step-by-step guide to deploying your app to Azure App Service Container:

1. Push your image to a container registry (ACR or Docker Hub)

2. Connect to the registry using the Docker Explorer

3. Tag your image with the registry name

4. Deploy the image to Azure App Service using the Docker Explorer

By following these steps, you'll be able to deploy your app to Azure App Service Container and enjoy the benefits of containerization.

To get started with Azure App Service Container, you'll need to set up your initial environment. This requires version 2.0.80 or later of the Azure CLI, which is already installed if you're using Azure Cloud Shell.

You'll also need an Azure account with an active subscription, which you can create for free. If you prefer to run CLI reference commands locally, install the Azure CLI and consider running it in a Docker container on Windows or macOS.

To install Docker, which you'll use to build Docker images, you might need to restart your computer. After installing Docker, open a terminal window and verify that it's installed by unpacking the ZIP file into a folder named docker-django-webapp-linux.

To set up your initial environment, you'll need an Azure account with an active subscription, which you can create for free.

You'll need to use the Bash environment in Azure Cloud Shell, or install the Azure CLI locally if you prefer, and consider running Azure CLI in a Docker container if you're on Windows or macOS.

To install Docker, which you'll use to build Docker images, you might need to restart your computer.

You can verify that Docker is installed by opening a terminal window and checking that it's working properly.

Here are the steps to verify Docker installation:

Make sure you have version 2.0.80 or later of the Azure CLI installed, as this tutorial requires it. If you're using Azure Cloud Shell, the latest version is already installed.

If you're already using an Apache and mod_php based image and have an entrypoint defined inside your Dockerfile, you can modify the CMD argument instead of using an alternative configuration.

This can be a more straightforward approach, especially if you're familiar with modifying Dockerfile entries.

To create a user-assigned managed identity in Azure, you'll need to create a resource group and a managed identity. You can do this by running the az group create command to create a resource group, and then creating a managed identity in that group using the az identity create command.

You can also create a user-assigned managed identity through the Azure portal. To do this, navigate to the Azure portal and search for "Managed Identities" in the search bar. Select the item labeled Managed Identities under the Services heading, and then select Create. This will bring up the creation wizard, where you can configure the settings for your managed identity.

In the creation wizard, you'll need to select the subscription you want to create your resources in, and then select Create new to create a new resource group. You can then type in the name of the resource group, which in this case is "msdocs-custom-container-tutorial". You'll also need to select the region for your resource group, which in this case is West Europe.

Once you've completed the creation wizard, you can open the management page for your managed identity by selecting Go to resource. This will bring up the management page for your managed identity, where you can view and manage its settings.

Here's a step-by-step guide to creating a user-assigned managed identity:

1. Run the az group create command to create a resource group.

2. Create a managed identity in the resource group using the az identity create command.

3. Navigate to the Azure portal and search for "Managed Identities" in the search bar.

4. Select the item labeled Managed Identities under the Services heading, and then select Create.

5. Configure the settings for your managed identity in the creation wizard.

6. Open the management page for your managed identity by selecting Go to resource.

By following these steps, you can create a user-assigned managed identity in Azure that you can use to authenticate with a container registry.

To build and test your Azure App Service Container, you'll need to create a custom Docker image. Run the command `docker build --tag appsvc-tutorial-custom-image .` to build the image locally.

This command should be run from the directory where your Dockerfile is located. If you're using Windows and encounter the error `standard_init_linux.go:211: exec user process caused "no such file or directory"`, it's likely due to CRLF line endings in your `init.sh` file. Clone the repository again with the `--config core.autocrlf=input` parameter to fix this issue.

Once the image is built, run it locally with the command `docker run -it -p 8000:8000 appsvc-tutorial-custom-image`. This will start the container and make it accessible at `http://localhost:8000`.

You can verify that the web app and container are functioning correctly by browsing to this URL in your web browser.

To build and test your image locally, you'll need to run a few commands in your terminal. Run the command `docker build --tag appsvc-tutorial-custom-image .` to build the image.

This command specifies the tag for the image and the directory to build from. If you're running into issues, check the Docker Hub quotas, which limit anonymous and authenticated pulls per IP and user. Try running `docker login` if you're not already logged in.

To test the build, run the command `docker run -it -p 8000:8000 appsvc-tutorial-custom-image`. This command specifies the port and includes the name of the image. The `-it` flag lets you stop the container with Ctrl+C.

If you're running on Windows and encounter the error `standard_init_linux.go:211: exec user process caused "no such file or directory"`, it's likely due to CRLF line endings in the `init.sh` file. Clone the repository again with the `--config core.autocrlf=input` parameter to resolve this issue.

Once the build is successful, browse to `http://localhost:8000` to verify that the web app and container are functioning correctly.

You can deploy a custom-configured Windows image from Visual Studio to make OS changes that your app needs. This makes it easy to migrate an on-premises app that requires a custom OS and software configuration.

To migrate custom software, you can use a custom container in Azure App Service. This allows you to deploy a custom-configured Windows image from Visual Studio.

You can deploy a custom-configured Windows image from Visual Studio to Azure Container Registry and then run it in App Service. This is a key step in migrating custom software to the cloud.

In Solution Explorer, right-click the project and select Add > Container Orchestration Support. This is the first step in setting up a custom container in Visual Studio.

Congratulations! You've migrated an ASP.NET application to Azure App Service in a Windows container.