NOVA-411: Hello World migrations, Bicep to Terraform & Selenium to Playwright

[hugoglez-nc]

Migration to Terraform and Playwright

Infrastructure (Bicep → Terraform)

• Replaced Infrastructure/Pipelines/container-app.bicep with Terraform modules in Infrastructure/Terraform/
• Pipeline now uses Terraform Plan → Apply → Destroy workflow with unique state files per build (helloworld-{env}-{buildId}.tfstate)
• Backend configured for Azure Storage with dynamic container_name based on EnvironmentName parameter
• Maintains same Container App configuration (managed identity, ACR integration, port 8080)

Testing (Selenium → Playwright)

• Migrated HelloWorld.IntegrationTests/ from NUnit + Selenium (Chrome) to NUnit + Playwright
• Replaced WebDriver element lookups with Playwright's built-in locators (e.g., Page.Locator("#brandLink"))
• Simplified test setup: Playwright auto-manages browsers, no more ChromeDriver version mismatches
• Cross-browser ready: currently uses Chromium, easily extensible to Firefox/WebKit

Breaking Changes

• None for the app itself—same ASP.NET Core 8 MVC with identical element IDs in _Layout.cshtml
• Pipeline requires Terraform backend configured in Azure Storage (see providers.tf)
• Local test execution now requires pwsh playwright.ps1 install instead of Chrome/ChromeDriver

Updated Docs

• Infrastructure/Terraform/README.md documents pipeline integration and backend configuration

[KarsonAlford]

Add backlog to switch to managed identity

[KarsonAlford]

Backlog generic http traffic keda scaling rule?

[KarsonAlford]

Can we use managed idenitity instead

[hugoglez-nc]

you mean use "mi-dev-devops-usc" instead of "NContractsSC"?
I tried that, but task Docker@2 expects a service connection, so the option is to create a new service connection using the new managed identity.

[KarsonAlford]

Are the state files going to accumulate forever? I want to show using the storage account but if these are going to be left around forever we should probably delete it as part of the teardown with a comment explaining why we stored it to begin with

[hugoglez-nc]

that's correct, this is something that I wanted to check with you: state files and docker images will accumulate, so we can backlog a ticket to add some clean-up tasks for hello-world docker images and tfstate files.
Currently, there are 112 tags in hello-world ACR repo, but I think the manage identity will need more permissions to do the clean-up.

[KarsonAlford]

Why install latest?

[hugoglez-nc]

To have the latest patches and features, but either way in provider.tf we are using this:
required_version = "~> 1.0"
The ~> symbol allows the minor version to be greater than 0, but keep the major version in 1.x to avoid any breaking changes with a major version change.