Allow user secrets in dotnet-isolated projects (#3052)

* Adding dotnet isolated in user secrets flow

* Removing blank line

* Adding user secret in dotnet isolated

Author: surgupta-msft

src/Azure.Functions.Cli/Actions/HostActions/StartHostAction.cs

@@ -179,7 +179,8 @@ public override ICommandLineParserResult ParseArgs(string[] args)
         private async Task<IWebHost> BuildWebHost(ScriptApplicationHostOptions hostOptions, Uri listenAddress, Uri baseAddress, X509Certificate2 certificate)
         {
             LoggingFilterHelper loggingFilterHelper = new LoggingFilterHelper(_hostJsonConfig, VerboseLogging);
-            if (GlobalCoreToolsSettings.CurrentWorkerRuntime == WorkerRuntime.dotnet)
+            if (GlobalCoreToolsSettings.CurrentWorkerRuntime == WorkerRuntime.dotnet ||
+                GlobalCoreToolsSettings.CurrentWorkerRuntime == WorkerRuntime.dotnetIsolated)
             {
                 UserSecretsId = ProjectHelpers.GetUserSecretsId(hostOptions.ScriptPath, loggingFilterHelper, new LoggerFilterOptions());
             }

src/Azure.Functions.Cli/Helpers/ProjectHelpers.cs

@@ -40,7 +40,7 @@ public static string FindProjectFile(string path, LoggingFilterHelper loggingFil
                 {
                     foreach (FileInfo file in projectFiles)
                     {
-                        if (string.Equals(projectFiles[0].Name, Constants.ExtenstionsCsProjFile, StringComparison.OrdinalIgnoreCase)) continue;
+                        if (string.Equals(file.Name, Constants.ExtenstionsCsProjFile, StringComparison.OrdinalIgnoreCase)) continue;
                         logger.LogDebug($"Found {file.FullName}. Using for user secrets file configuration.");
                         return file.FullName;
                     }

test/Azure.Functions.Cli.Tests/E2E/StartTests.cs

@@ -528,16 +528,18 @@ await CliTester.Run(new RunConfiguration
             }, _output);
         }
 
-        [Fact]
-        public async Task start_with_user_secrets()
+        [Theory]
+        [InlineData("dotnet")]
+        [InlineData("dotnet-isolated")]
+        public async Task start_with_user_secrets(string language)
         {
             await CliTester.Run(new RunConfiguration[]
             {
                 new RunConfiguration
                 {
                     Commands = new[]
                     {
-                        "init . --worker-runtime dotnet",
+                        $"init . --worker-runtime {language}",
                         "new --template \"Http trigger\" --name http1",
                         "new --template \"Queue trigger\" --name queue1"
                     },