Merge pull request #4733 from SeanKilleen/patch-3

Update text to match example

Author: ktoliver

docs/containers/container-build.md

@@ -26,7 +26,7 @@ EXPOSE 80
 EXPOSE 443
 ```
 
-The lines in the Dockerfile begin with the Nano Server image from Microsoft Container Registry (mcr.microsoft.com) and create an intermediate image `base` that exposes ports 80 and 443, and sets the working directory to `/app`.
+The lines in the Dockerfile begin with the Debian image from Microsoft Container Registry (mcr.microsoft.com) and create an intermediate image `base` that exposes ports 80 and 443, and sets the working directory to `/app`.
 
 The next stage is `build`, which appears as follows: