[GB18030] Fail to create a container app which image name contains GB18030 characters

OS: Win10
Build Version: v0.5.1
GB18030 Language: All

Repro Steps:

1. Open a .NET MVC project in VS Code which includes Dockerfile in it.
2. Right click one container app environment -> Select "Create Container App..." -> Enter a container app name -> Select "Build from project remotely using Azure Container Registry" -> Select an Azure Container Registry -> Select the default "Dockerfile" in the project folder -> Use the image name which contains GB18030 characters (see below screenshot) and fill the following steps to create a container app.
   
3. Check whether succeeds to create a container app or not.

Expect:
Succeed to create a container app which image name contains GB18030 characters.

Actual:
Fail to create a container app which image name contains GB18030 characters.

Start by reproducing the failure in the .NET MVC project using its Dockerfile, an Azure Container Registry, and an image name containing GB18030 characters. Compare the result with an ASCII-only image name and trace the container-app creation flow to identify where the name is rejected; done means the GB18030 image name creates the container app successfully.