CI/CD – Building Your First Azure Pipeline

• "Welcome to Azure DevOps journey!"

• Introduce the crucial concept of CI/CD (Continuous Integration/Continuous Delivery) as the backbone of modern software development. Explain that CI/CD automates the process of building, testing, and deploying applications.

• Mention that this week focuses on the "CI" (Continuous Integration) or Build part of the pipeline.

Body Paragraph 1: Demystifying CI/CD and Azure Pipelines

• Explain the basics of CI/CD in simple terms.

  • Continuous Integration (CI): The practice of regularly merging code changes into a central repository, followed by automated builds and tests. This helps catch integration issues early.

  • Continuous Delivery (CD): An extension of CI that automates the release of validated code to various environments (e.g., staging, production).

• Introduce Azure Pipelines as the service within Azure DevOps that enables CI/CD.

• Mention that pipelines can be defined using a human-readable YAML structure, which is a key part of this week's lesson.

Body Paragraph 2: Understanding YAML for Azure Pipelines

• Explain why YAML is used: it's a lightweight data-serialization language that makes pipeline definitions easy to read, manage, and version-control alongside your source code.

• Describe the basic structure of a YAML pipeline:

  • trigger:: Specifies when the pipeline should run (e.g., on a code push to the main branch).

  • pool:: Defines the virtual machine where the build will run.

  • variables:: Allows you to define reusable values (e.g., buildConfiguration: 'Release').

  • steps:: The core of the pipeline, where you define the sequence of tasks to perform (e.g., dotnet restore, dotnet build).

Body Paragraph 3: Hands-on: Building a .NET Core App

• Walk through the practical steps you took. This is where you can show off your newly acquired skills!

• Step 1: Write a Simple Build YAML Pipeline.

  • Show a snippet of the basic YAML file you created.

  • Explain what each section does (e.g., task: DotNetCoreCLI@2 is the task that runs the .NET Core command).

• Step 2: Building the .NET Core App via Azure Pipeline.

  • Describe how you configured the pipeline in Azure DevOps and ran it.

  • Mention that the pipeline will automatically fetch the code from the repository, restore dependencies, and build the project.

  • Talk about the build artifacts—the output of the build process (e.g., a .zip file of the compiled application).

• Step 3: Adding Triggers and Variables.

  • Explain the power of build triggers. Show how you configured the pipeline to automatically run every time a change is pushed to the main branch. This is the essence of "Continuous Integration."

  • Demonstrate how pipeline variables make your YAML more flexible. Show an example of a variable for the build configuration.

Conclusion:

• Summarize your key takeaways from the week.

• Emphasize that this first build pipeline is a foundational step toward a fully automated CI/CD process.

• Conclude by looking ahead to the next stage—the "CD" part—and express your excitement for building a complete, end-to-end pipeline.