Fix file config directory name in config (#5777)

Author: JamesNK

src/Aspire.Dashboard/DashboardWebApplication.cs

@@ -110,7 +110,7 @@ public DashboardWebApplication(
         }
 
         // Allow for a user specified config directory on disk (e.g. for Docker secrets). Throw an error if the specified directory doesn't exist.
-        if (builder.Configuration[DashboardConfigNames.DashboardFileConfigDirectory.ConfigKey] is { Length: > 0 } fileConfigDirectory)
+        if (builder.Configuration[DashboardConfigNames.DashboardFileConfigDirectoryName.ConfigKey] is { Length: > 0 } fileConfigDirectory)
         {
             builder.Configuration.AddKeyPerFile(directoryPath: fileConfigDirectory, optional: false, reloadOnChange: true);
         }

src/Shared/DashboardConfigNames.cs

@@ -10,9 +10,9 @@ internal static class DashboardConfigNames
     public static readonly ConfigName DashboardOtlpHttpUrlName = new("DOTNET_DASHBOARD_OTLP_HTTP_ENDPOINT_URL");
     public static readonly ConfigName DashboardUnsecuredAllowAnonymousName = new("DOTNET_DASHBOARD_UNSECURED_ALLOW_ANONYMOUS");
     public static readonly ConfigName DashboardConfigFilePathName = new("DOTNET_DASHBOARD_CONFIG_FILE_PATH");
+    public static readonly ConfigName DashboardFileConfigDirectoryName = new("DOTNET_DASHBOARD_FILE_CONFIG_DIRECTORY");
     public static readonly ConfigName ResourceServiceUrlName = new("DOTNET_RESOURCE_SERVICE_ENDPOINT_URL");
 
-    public static readonly ConfigName DashboardFileConfigDirectory = new("Dashboard:FileConfigDirectory", "DASHBOARD__FILECONFIGDIRECTORY");
     public static readonly ConfigName DashboardOtlpAuthModeName = new("Dashboard:Otlp:AuthMode", "DASHBOARD__OTLP__AUTHMODE");
     public static readonly ConfigName DashboardOtlpPrimaryApiKeyName = new("Dashboard:Otlp:PrimaryApiKey", "DASHBOARD__OTLP__PRIMARYAPIKEY");
     public static readonly ConfigName DashboardOtlpSecondaryApiKeyName = new("Dashboard:Otlp:SecondaryApiKey", "DASHBOARD__OTLP__SECONDARYAPIKEY");

tests/Aspire.Dashboard.Tests/Integration/StartupTests.cs

@@ -93,7 +93,7 @@ public async Task Configuration_FileConfigDirectoryDoesExist_Success()
         try
         {
             var config = new ConfigurationManager()
-                .AddInMemoryCollection(new Dictionary<string, string?> { [DashboardConfigNames.DashboardFileConfigDirectory.ConfigKey] = fileConfigDirectory.FullName })
+                .AddInMemoryCollection(new Dictionary<string, string?> { [DashboardConfigNames.DashboardFileConfigDirectoryName.ConfigKey] = fileConfigDirectory.FullName })
                 .Build();
             WebApplicationBuilder? localBuilder = null;
             Action<WebApplicationBuilder> webApplicationBuilderConfigAction = builder =>
@@ -126,7 +126,7 @@ public async Task Configuration_FileConfigDirectoryReloadsChanges_Success()
         try
         {
             var config = new ConfigurationManager()
-                .AddInMemoryCollection(new Dictionary<string, string?> { [DashboardConfigNames.DashboardFileConfigDirectory.ConfigKey] = fileConfigDirectory.FullName })
+                .AddInMemoryCollection(new Dictionary<string, string?> { [DashboardConfigNames.DashboardFileConfigDirectoryName.ConfigKey] = fileConfigDirectory.FullName })
                 .Build();
             WebApplicationBuilder? localBuilder = null;
             Action<WebApplicationBuilder> webApplicationBuilderConfigAction = builder =>
@@ -165,7 +165,7 @@ public async Task Configuration_FileConfigDirectoryDoesntExist_Error()
             await using var app = IntegrationTestHelpers.CreateDashboardWebApplication(testOutputHelper,
                 data =>
                 {
-                    data[DashboardConfigNames.DashboardFileConfigDirectory.ConfigKey] = fileConfigDirectory;
+                    data[DashboardConfigNames.DashboardFileConfigDirectoryName.ConfigKey] = fileConfigDirectory;
                 });
         });