Asp net core in docker container vs azure app service


When it comes to deploying ASP.NET applications, developers often face the dilemma of choosing between running their applications in a Docker container or using Azure App Service. Both options have their advantages and disadvantages, and the choice depends on various factors such as scalability, flexibility, and ease of deployment. In this article, we will explore the differences between ASP.NET Core in a Docker container and Azure App Service and provide examples to help you make an informed decision.

ASP.NET Core in Docker Container

Running ASP.NET Core applications in Docker containers offers several benefits. Docker containers provide a lightweight and isolated environment for running applications, making it easier to package and deploy applications consistently across environments. Here's an example of how you can run an ASP.NET Core application in a Docker container:

FROM AS build

COPY *.csproj .
RUN dotnet restore

COPY . .
RUN dotnet publish -c Release -o out

FROM AS runtime
COPY --from=build /app/out .

ENTRYPOINT ["dotnet", "YourApp.dll"]

In this example, we start by specifying the base image for the build phase, which includes the .NET SDK. We then copy the project file, restore dependencies, and copy the application code. After that, we publish the application in release mode. In the runtime phase, we use a different base image that includes the ASP.NET runtime and copy the published output from the build phase. Finally, we set the entry point for the container to start the ASP.NET Core application.

Azure App Service

Azure App Service is a fully managed platform for web applications. It provides a scalable and environment for running ASP.NET applications without the need to manage infrastructure. Here's an example of how you can deploy an ASP.NET Core application to Azure App Service:

az  up --sku F1 --name YourAppName --resource-group YourResourceGroup --runtime "DOTNET|5.0"

In this example, we use the Azure CLI to deploy the ASP.NET Core application to Azure App Service. We specify the SKU (F1, which is the free tier), the name of the app, the resource group, and the runtime version. Azure App Service takes care of provisioning the necessary infrastructure and deploying the application.

Choosing Between Docker Container and Azure App Service

Now that we have seen examples of deploying ASP.NET Core applications in Docker containers and Azure App Service, let's discuss some factors to consider when choosing between the two:

Scalability and Flexibility

If you anticipate high traffic or need to scale your application dynamically, Docker containers provide more flexibility. You can easily scale containers horizontally by running multiple instances and load balancing the traffic. Azure App Service also offers scalability options, but it may have some limitations compared to Docker containers.

Deployment and Management

Deploying and managing applications in Docker containers requires more and setup compared to Azure App Service. Docker containers offer more control over the deployment process, but they also require more effort to set up and maintain. Azure App Service, on the other hand, abstracts away the infrastructure management, making it easier to deploy and manage applications.

Integration with Other Azure Services

If your application needs to integrate with other Azure services, such as Azure SQL Database or Azure Storage, Azure App Service provides seamless integration. You can easily configure and access these services within your application without worrying about networking or authentication. Docker containers can also integrate with Azure services, but it may require additional configuration and setup.


Choosing between running ASP.NET Core applications in Docker containers or using Azure App Service depends on your specific requirements and preferences. Docker containers offer more flexibility and control over the deployment process, Azure App Service provides a managed environment for easy deployment and integration with other Azure services. Consider factors such as scalability, deployment complexity, and integration needs to make an informed decision. Ultimately, both options can effectively host ASP.NET Core applications, and the choice depends on your specific use case.

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