docs: Removed outdated container publishing instructions

[Vamshi-Microsoft]

Purpose

This pull request updates the deployment documentation to streamline the post-deployment steps and removes instructions for publishing a local build container to Azure Container Registry. The changes focus on clarifying the authentication setup process and simplifying the guide for users deploying on Azure App Service.

Documentation updates:

• Changed step 6 in docs/DeploymentGuide.md to direct users to follow the authentication setup guide after deployment, improving clarity on required post-deployment actions.
• Removed the section detailing how to publish a local build container to Azure Container Registry, reducing complexity and focusing the guide on standard deployment scenarios.

Does this introduce a breaking change?

• Yes
• No

How to Test

• Get the code

git clone [repo-address]
cd [repo-name]
git checkout [branch-name]
npm install

[github-actions]

🎉 This PR is included in version 2.2.0 🎉

The release is available on GitHub release

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