fix logout flow in mvc

docker-compose.yml

@@ -42,6 +42,7 @@ services:
       - ConnectionString=Server=identity.data;Database=aspnet-Microsoft.eShopOnContainers;User Id=sa;Password=Pass@word
       #- MvcClient=http://104.40.62.65:5100             #Remote: VM Needs to have public access at 5105. 
       - MvcClient=http://localhost:5100                 #Local: You need a entry in windows host file to run identity in local docker. 
+        #10.0.75.1:5105
     ports:
       - "5105:5105"
     depends_on:

src/Web/WebMVC/Startup.cs

@@ -82,8 +82,8 @@ namespace Microsoft.eShopOnContainers.WebMVC
                 AutomaticAuthenticate = true,
             });
 
-            var identityUrl = Configuration.GetValue(typeof(string), "IdentityUrl");
-            var callBackUrl = Configuration.GetValue(typeof(string), "CallBackUrl");
+            var identityUrl = Configuration.GetValue<string>("IdentityUrl");
+            var callBackUrl = Configuration.GetValue<string>("CallBackUrl");
             var log = loggerFactory.CreateLogger("identity");
 
             log.LogDebug(identityUrl.ToString());
@@ -97,7 +97,7 @@ namespace Microsoft.eShopOnContainers.WebMVC
                 PostLogoutRedirectUri = callBackUrl.ToString(), 
                 ClientId = "mvc",
                 ClientSecret = "secret",
-                ResponseType = "code id_token",
+                ResponseType = "code id_token", 
                 SaveTokens = true,
                 GetClaimsFromUserInfoEndpoint = true,
                 RequireHttpsMetadata = false,