Rome .NET Conference is a free online event organized by the DotNetCode Community for developers. The main topic of this year is .NET 8, but many other topics on Microsoft development technologies and products (.NET, ASP.NET, AZURE, DevOps, and more...) are also covered. Link to the session: https://www.youtube.com/watch?v=D5aJnBLf2pQ

1. .NET Conference 2024

2. Optimizing .NET 8 Applications
with Docker and Azure:
A Comprehensive Guide
Hamida Rebaï - Cloud Solutions Architect – Microsoft MVP

3. Agenda
• Overview of .NET 8
• Introduction to Docker Containers
• Integrating .NET 8 with Docker
• Deploying .NET 8 Applications to Azure

4. Overview of .NET 8
Hamida Rebai

5. .NET 8 New Features
• Performance Improvements: Over 1,250 performance
improvements, particularly in JSON API scenarios and realistic
workloads with database access.
• ASP.NET Core Enhancements: ASP.NET Core in .NET 8 offers
extended capabilities for modern web application development,
with enhanced tools for server-side rendering and client-side
interactivity.
• Blazor and WebAssembly: Blazor in .NET 8 includes improved
server-side rendering and increased interactivity with
WebAssembly. Components render 20% faster, and new web
packaging features are introduced.
• C# 12 New Features: Features such as primary constructors and
collection expressions are added, improving code readability and
simplicity.
• Development Tools: New tools in Visual Studio and Visual Studio
Code are introduced to enhance the development experience,
including improvements for routing, debugging, and API testing.

6. • Reference Architecture eShop: A comprehensive reference
application, eShop, is showcased, utilizing a cloud-native
microservices architecture and highlighting the new capabilities of
.NET 8.
• Full-Stack Application Development: .NET 8 emphasizes ease of
development for full-stack web applications, with improvements for
both backend and frontend developers.
• Security and Performance Enhancements: ASP.NET Core is
designed with a focus on security and optimized for performance,
enabling efficient handling of various scenarios.
• Cloud-Native and Mobile Development: .NET 8 continues to
evolve as a preferred platform for cloud-native and mobile
development.
• Community and Contribution: .NET 8 has benefited from strong
community contribution, reflecting its growing adoption and
impact in the world of software development.

7. Introduction to Docker
Containers
Hamida Rebai

8. What is Containerization?
• Containerization streamlines software development by packaging
applications, dependencies, and configurations into a single
container image.
• The containerized application can be tested and deployed as a
unified unit to the host operating system (OS).
• Analogous to shipping containers, which standardize cargo
transportation, software containers offer a consistent deployment
unit for diverse code and dependencies.
• Containerization facilitates seamless deployment across various
environments with minimal adjustments.
• Containers provide application isolation within a shared OS
environment.
• Containerized applications operate atop a container host,
enhancing efficiency and resource utilization.
• Compared to virtual machines (VMs), containers offer a significantly
reduced footprint, optimizing resource allocation.

9. Docker architecture
App App
Docker Engine
App
Host OS
Server

10. Docker Images
● Snapshot in other types of VM
environments.
● Record of a Docker container at a
specific point in time.
● Image can’t be changed, it can be
duplicated, shared, or deleted.
Docker Container
● Virtualized runtime environment used
in application development.
● Can use just one machine, share its
kernel and virtualize the OS to run
more isolated processes.
● Docker containers are lightweight
Image Source and Credits: http://blog.bigstep.com/developers-love-docker/

11. Run a container from an image
• Develop your application.
• Package the application and its dependencies into an image.
• Optionally, store the image in a registry.
• Execute the application by running it as a container.
App
Develop Build
Image
Ship
Registry Container
Run

12. Dockerfile Docker Image
Build Run
Docker Container

13. Dockerfile
FROM mcr.microsoft.com/dotnet/sdk:8.0 AS build
WORKDIR /src
1
COPY ["mysolution.csproj", « mysolution/"]
RUN dotnet restore « mysolution.csproj" 2
COPY . .
WORKDIR "/src/mysolution"
RUN dotnet build “mysolution.csproj" -c Release -o /app/build
3
Specify
image
Copy project file
Copy and Build
Build runtime image
FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base
WORKDIR /app
COPY --from=build /app/publish .
4

14. Dockerfile
Starting the app
5
ENTRYPOINT ["dotnet", « yousolution.dll"]
Build our image & start container
docker build -t yoursolutionimage:1.0 .
Create and run our container
docker run –d -p 8080:80 -ti –name myapp --rm yousolutionimage:1.0

15. Containers Deployment

16. DEMO

17. Prerequisites
• Install Docker Desktop it is free, it is available for Mac and Windows.
• Docker Hub account, it is free.
• Install Visual Studio 2019 or 2022 or Visual Studio Code.
• Azure account where we are able to create an azure container registry
• PowerShell in Windows or Azure Cloud Shell.
• If you are using Visual Studio Code, Microsoft C# for Visual Studio Code,
Docker and Azure App Service extensions must be installed.

18. Demonstration flow
Tag the image
locally
Using Visual Studio or Docker
command line
Azure Container registry is a private registry
Docker Hub to host public images
Building a Docker Image Tagging Images Build and Store Images in the
Cloud

20. Build and Store Images in
Azure Container services
Hamida Rebai

21. Build and store images by using Azure
Container Registry
• What is Container Registry?
• Azure service that you can use to create your own
private Docker registries.
• Similar to Docker Hub but offers a few unique
benefits: Container Registry runs in Azure, Container
Registry is highly scalable, providing enhanced
throughput for Docker pulls that can span many
nodes concurrently.
• Use Container Registry
• Create a registry by using either the Azure portal or
the Azure CLI.
• Store and host images, and build images.

22. DEMO

23. Container and orchestrator
Storage
• Azure Container Instance
• Azure App Service as a
Container
• Azure Container Registry
More than one container
One container
• Azure Kubernetes Service
• Azure Container App

24. Azure Container
Registry
Hamida Rebai

25. Demo: Build and Store Images by Using Azure
Container Registry (ACR)
Using Azure Portal
● Create Azure Container Registry from
the Portal or from Visual Studio 2022
● Push the image from Visual Studio 2022

26. Demo: Build and Store Images by Using Azure
Container Registry (ACR)
Using Azure CLI
● Create Azure Container Registry using
Azure CLI
● Push the image from Visual Studio
Code
az acr create --resource-group dockersamplerg --name acrdemoapp --sku Basic --admin-enabled true

27. Azure Kubernetes
Services
Hamida Rebai

28. Azure Kubernetes Services
• Azure Kubernetes Service (AKS) is a managed
Kubernetes service that lets you quickly deploy
and manage clusters.

29. >_
Create AKS cluster using Azure CLI
az aks create --resource-group aksgr --name
myAKSCluster --node-count 1 -- generate-ssh-keys --
attach-acr aksprojectcontainer

30. Deploy an Azure Kubernetes Service cluster and
run an application using the Azure CLI
1- Open CloudShell My Dashboard — Microsoft Azure and connect to your
cluster as bellow:
az account set — subscription yoursubscription
az aks get-credentials — resource-group aksgr — name myAKSCluster
You can find these commands when you open Azure Portal and your cluster:

31. Deploy an Azure Kubernetes Service cluster
and run an application using the Azure CLI
• 2- Create an empty file called: azure-demo-deployment.yaml
• 3- Copy this content to the empty file created, we will describe it after.

32. Deploy an Azure Kubernetes Service cluster
and run an application using the Azure CLI
apiVersion: apps/v1
kind: Deployment
metadata:
name: demo-kubernetes-deployment
spec:
selector:
matchLabels:
app: demo-kubernetes-pod
replicas: 1
template:
metadata:
labels:
app: demo-kubernetes-pod
spec:
containers:
-- name: aksprojectcontainer
image:
aksprojectcontainer.azurecr.io/aksp
roject:latest
ports:
-- containerPort: 80

33. Deploy an Azure Kubernetes Service cluster
and run an application using the Azure CLI
4- Run the application and deploy it in the cluster using the kubectl apply
command and specify the name of your YAML manifest.
kubectl apply -f azure-demo-deployment.yaml
We will use kubectl get deployments to verify if the deployment was
created or not.
When the application runs, a Kubernetes service exposes the application
front end to the internet. This process can take a few minutes to complete.
5- we will use kubectl get service command with the --watch argument.
kubectl get service demo-kubernetes-deployment — watch

34. Azure Container Apps

35. Azure Container App
Azure Container Apps is a fully managed environment that enables
you to run microservices and containerized applications on a
serverless platform.
• Provide a serverless hosting service that sits on top of an AKS
Service
• Deploy multiple containers
• Azure Container app do not even expose Kubernetes APIs to the
users.

36. Questions?

37. .NET Conference 2024
Grazie