Keycloak container fails to start in Azure Container Apps

### Is there an existing issue for this?

- [X] I have searched the existing issues

### Describe the bug

Deploying a container provisioned via the Keycloak integration won't start in Azure Container Apps (ACA).

ACA will try to activate it, but it continuously fails.

The container reports this in the logs:

`Key material not provided to setup HTTPS. Please configure your keys/certificates or start the server in development mode.`

### Expected Behavior

Keycloak should successfully deploy to ACA.

### Steps To Reproduce

1. Create a .NET Aspire app
2. Add the Keycloak AppHost integration: via `Aspire.Hosting.Keycloak` NuGet package
3. Add the Keycloak integration to the AppHost model:

```csharp
var builder = DistributedApplication.CreateBuilder(args);

var keycloak = builder.AddKeycloak("keycloak", 8080);

builder.Build().Run();

```

4. Deploy via `azd up`
5. The container never starts in ACA:


### Exceptions (if any)

Key material not provided to setup HTTPS. Please configure your keys/certificates or start the server in development mode.

### .NET Version info

.NET SDK:
Version: 8.0.400
Commit: 36fe6dda56
Workload version: 8.0.400-manifests.2772ffde
MSBuild version: 17.11.3+0c8610977

Runtime Environment:
OS Name: Windows
OS Version: 10.0.22631
OS Platform: Windows
RID: win-x64
Base Path: C:\Program Files\dotnet\sdk\8.0.400\

.NET workloads installed:
Configured to use loose manifests when installing new manifests.
[aspire]
Installation Source: SDK 8.0.400, VS 17.11.35303.130
Manifest Version: 8.2.1/8.0.100
Manifest Path: C:\Program Files\dotnet\sdk-manifests\8.0.100\microsoft.net.sdk.aspire\8.2.1\WorkloadManifest.json
Install Type: Msi

Host:
Version: 8.0.8
Architecture: x64
Commit: 08338fcaa5

.NET SDKs installed:
8.0.108 [C:\Program Files\dotnet\sdk]
8.0.206 [C:\Program Files\dotnet\sdk]
8.0.304 [C:\Program Files\dotnet\sdk]
8.0.400 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
Microsoft.AspNetCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.AspNetCore.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
Microsoft.NETCore.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.NETCore.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
Microsoft.WindowsDesktop.App 8.0.6 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
Microsoft.WindowsDesktop.App 8.0.8 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
x86 [C:\Program Files (x86)\dotnet]
registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
Not set

global.json file:
Not found

Learn more:
https://aka.ms/dotnet/info

Download .NET:
https://aka.ms/dotnet/download

### Anything else?

When deploying to Azure, the Keycloak integration adds just this parameter:

`start`

However to run Keycloak in prod requires multiple other parameters as described [here](https://www.keycloak.org/server/containers).

Something like this:

```
podman|docker run --name mykeycloak -p 8080:8080 \
-e KEYCLOAK_ADMIN=admin -e KEYCLOAK_ADMIN_PASSWORD=change_me \
quay.io/keycloak/keycloak:latest \
start \
--db=postgres --features=token-exchange \
--db-url= --db-username= --db-password= \
--https-key-store-file= --https-key-store-password=
```