Hello! We are a writer team from Definer Inc. In this issue, you are wondering how to create CI/CD for Azure App Service. Let's take a look at the actual screens and resources to explain in detail.

This article summarizes information and practices that can be helpful when you want to build CI/CD for Azure App Service.

CI/CD, which stands for Continuous Integration and Continuous Deployment/Delivery, is a set of practices and methodologies that streamline the software development process to improve efficiency, quality, and speed. These practices aim to automate and integrate various stages of the development lifecycle, from code creation to deployment and beyond. Continuous Integration (CI) refers to the practice of regularly integrating code changes from multiple developers into a shared repository. With CI, developers merge their code changes frequently, often several times a day, into a central codebase. Automated build and testing processes are triggered automatically upon each integration, ensuring that the new code doesn't introduce any conflicts or errors. Continuous Deployment/Delivery (CD) extends CI by automating the release and deployment of code changes to production environments. In Continuous Deployment, every successful code change that passes all tests is automatically deployed to production, enabling rapid and frequent releases. Continuous Delivery, on the other hand, follows a similar process but leaves the final deployment decision to the development team, allowing them to choose when to deploy the code to production.

Azure App Service is a Platform-as-a-Service (PaaS) offering provided by Microsoft Azure. It is a fully managed service that allows developers to build, deploy, and scale web applications, APIs, and mobile backends easily. With Azure App Service, developers can focus on coding and application logic, while the underlying infrastructure management, scaling, and maintenance are taken care of by Microsoft. Azure App Service integrates seamlessly with Azure DevOps, Microsoft's comprehensive DevOps platform, to enable Continuous Integration and Continuous Deployment (CI/CD) workflows. This integration streamlines the process of building, testing, and deploying applications to Azure App Service, making it easier for development teams to deliver software faster and more reliably.

First, we will implement the registry as a setup for the App Service.   ① Create Azure Container Registry Login to the Azure console and access "Container Registry". Click "Create" and enter the subscription and resource group information.   ②Prepare Information to login to Azure Container Registry The user and password information required for login can be found on the "Access Key" tab of the Container Registry Details screen. If the administrator user is disabled, enable it.   ③ Prepare Container Image This time, we will use a container image of nginx. Tag the image and prepare to push it to Azure Container Registry.   ④ Push the container image to Azure Container Registry Finally, push the nginx container to Azure Container Registry.   Following these below commands:

## Download nginx image locally
sudo docker pull nginx

## Tag the nginx image
sudo docker tag nginx testcicdcontainer.azurecr.io/nginx:1.0


## Login to Azure Container Registry
sudo docker login -u ${username} -p ${password} testcicdcontainer.azurecr.io
## "Login Succeeded" will be received if successful


## Push to Azure Container Registry
sudo docker push testcicdcontainer.azurecr.io/nginx:1.0                

Next, we will implement App Service and CI/CD.   ① Create App Service Go to the App Service screen and click "Create New". Select "Linux" and "Docker" for OS and startup type, respectively.   For the container image, select the nginx container from the container registry you just created.     This completes the startup of Azure App Service.   ② CI/CD implementation Next, we will implement CI/CD for the App Service. From the App Service details screen, select "Deployment Center" > "Settings". Select "Azure Container Registry" for the registry resource, and select docker images and tags. Turn on "Continuous Deployment" and "Save"   ③ Confirm CI/CD Push the new docker image to the Azure Container Registry as described earlier, and the CI/CD pipeline will kick in. The execution log can be checked from the App Service details screen under "Deployment Center" > "Logs".   You can now see that your App Service containers have been updated!

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This article provides useful introductory information free of charge. For consultation and inquiries, please contact "Definer Inc".

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