Updates docker config and adds HttpContext

Removes a redundant host config in the docker file.

Adds HttpContextAccessor to the service collection. This
component is used to provide access to the current request context.

Source/ProofOfConcept/Program.cs

@@ -26,6 +26,7 @@ builder.Services.AddHttpClient();
 builder.Services.AddRazorPages();
 builder.Services.AddHealthChecks()
     .AddAsyncCheck("", cancellationToken => Task.FromResult(HealthCheckResult.Healthy()), ["ready"]); //TODO: Check tag
+builder.Services.AddHttpContextAccessor();
 
 builder.Services.AddAuthentication(o =>
 {