Now is here:
How do you find this? I could not find and advanced search for bing, but google has one:
Fill in the key words from the article or url (in this case I used Multi-container) and for the site list azure.github.io/AppService and the 2nd article was the one I wanted. I could have used the date time part of the URL as well but I was not sure if they were included in the new site.