ARM Template and Dockerfile refresh

[dariustehrani]

Hi there
currently DemoApp is no longer working as is.
here are some improvements to change that, but some frontend & backend issues remain

• fixed outdated arm api references in the ARM Template.
• fixed skus for various components.
• the process is currently somewhat broken. but can be fixed by configuring the build Container manually.
• The base-image was updated and would require an update of the dockerhub base image. (as included)
• I was not able to fix various deprecation issues in the frontend and backend.
  Darius