Dockerfile still targeting .NET 8.0

[sbruttin]

Tool version
v5.0.0.

Describe the bug
The current main branch contains a Dockerfile that is still targeting .NET 8.0 instead of .NET 10.0

To Reproduce
Steps to reproduce the behavior:

1. Go to 'https://github.com/mspnp/AzureNamingTool/blob/main/src/Dockerfile'
2. See 'FROM mcr.microsoft.com/dotnet/aspnet:8.0 AS base'

Expected behavior
FROM must target aspnet:10.0 and sdk:10.0

[BryanSoltis]

This has been updated.

#178