Adding a project reference with an uppercase name breaks ACA publish

Adding a project reference to apphost using an uppercase name will work fine locally but errors out during publish.

Repro:

Create a new project using the Aspire Starter template (should repro with any .NET Aspire app)

Edit the Program.cs in the AppHost to change the project reference name to include uppercase characters:

builder.AddProject<Projects.AspireSample_Web>("WebFrontEnd")
.WithExternalHttpEndpoints()
.WithReference(apiService);

Deploy to ACA using Visual Studio using the steps in the learn docs.

Deployment fails with the following error message:

6/13/2024 2:20:49 PM: Info   (x) Failed: Deploying service WebFrontEnd
6/13/2024 2:20:49 PM: Error failed deploying service 'WebFrontEnd': updating container app service: applying manifest: PUT https://management.azure.com/subscriptions/asdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdfasdf/resourceGroups/rg-aspire-deployment-repro/providers/Microsoft.App/containerApps/WebFrontEnd
--------------------------------------------------------------------------------
RESPONSE 400: 400 Bad Request
ERROR CODE: ContainerAppInvalidName
--------------------------------------------------------------------------------
{
  "error": {
    "code": "ContainerAppInvalidName",
    "message": "Invalid ContainerApp name 'WebFrontEnd'. A name must consist of lower case alphanumeric characters or '-', start with an alphabetic character, and end with an alphanumeric character and cannot have '--'. The length must not be more than 32 characters."
  }
}
--------------------------------------------------------------------------------

Changing the reference name to lowercase using builder.AddProject<Projects.AspireSample_Web>("webfrontend") and republishing will succeed.

We should both document this issue and ideally include an analyzer or warning that reference names should be lowercased.

dotnet / aspire

Adding a project reference with an uppercase name breaks ACA publish #4505