This change wires the eshoponweb-cicd.yml workflow to use real Azure environment values for the resource group, subscription, and web app instead of placeholder defaults. It also switches the trigger to workflow_dispatch, which makes sense for manually validating the IaC and deployment flow during the lab rather than running on every push. The practical effect is that the pipeline is now ready for controlled test executions against an actual target environment.

Updated the GitHub Actions CI/CD workflow with concrete Azure deployment variables so the lab pipeline can be validated end to end. - zhengqunkoo/eShopOnWeb