updating default TFM and help strings (#3570)

* updating default TFM and help strings

* updating webhost version for transitive deps

Author: mattchenderson

src/Azure.Functions.Cli/Actions/LocalActions/InitAction.cs

@@ -116,7 +116,7 @@ public override ICommandLineParserResult ParseArgs(string[] args)
 
             Parser
                 .Setup<string>("target-framework")
-                .WithDescription("Initialize a project with the given target framework moniker. Currently supported only when --worker-runtime set to dotnet-isolated. Options are - \"net48\", \"net6.0\", \"net7.0\", and \"net8.0\"")
+                .WithDescription("Initialize a project with the given target framework moniker. Currently supported only when --worker-runtime set to dotnet-isolated. Options are - \"net8.0\", \"net7.0\", \"net6.0\", and \"net48\"")
                 .Callback(tf => TargetFramework = tf);
 
             Parser
@@ -331,13 +331,13 @@ private void ValidateTargetFramework()
             {
                 if (string.IsNullOrEmpty(TargetFramework))
                 {
-                    // Default to .NET 6 if the target framework is not specified
+                    // Default to .NET 8 if the target framework is not specified
                     // NOTE: we must have TargetFramework be non-empty for a dotnet-isolated project, even if it is not specified by the user, due to the structure of the new templates
-                    TargetFramework = Common.TargetFramework.net6;
+                    TargetFramework = Common.TargetFramework.net8;
                 }
                 if (!TargetFrameworkHelper.GetSupportedTargetFrameworks().Contains(TargetFramework, StringComparer.InvariantCultureIgnoreCase))
                 {
-                    throw new CliArgumentsException($"Unable to parse target framework {TargetFramework}. Valid options are \"net48\", \"net6.0\", and \"net7.0\"");
+                    throw new CliArgumentsException($"Unable to parse target framework {TargetFramework}. Valid options are \"net8.0\", \"net7.0\", \"net6.0\", and \"net48\"");
                 }
             }
             else if (!string.IsNullOrEmpty(TargetFramework))

src/Azure.Functions.Cli/Azure.Functions.Cli.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk" InitialTargets="ExcludeWorkersFromReadyToRun">
+<Project Sdk="Microsoft.NET.Sdk" InitialTargets="ExcludeWorkersFromReadyToRun">
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net6.0</TargetFramework>
@@ -273,7 +273,7 @@
     <PackageReference Include="Microsoft.ApplicationInsights" Version="2.21.0" />
     <PackageReference Include="Microsoft.AspNetCore.DataProtection" Version="2.2.0" />
     <PackageReference Include="Microsoft.Azure.DurableTask.AzureStorage.Internal" Version="1.4.0" />
-    <PackageReference Include="Microsoft.Azure.WebJobs.Script.WebHost" Version="4.28.3" />
+    <PackageReference Include="Microsoft.Azure.WebJobs.Script.WebHost" Version="4.28.5" />
     <PackageReference Include="Microsoft.Build" Version="17.0.0" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="WindowsAzure.Storage" Version="9.3.1" />

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

@@ -290,7 +290,7 @@ public Task init_with_dotnetIsolated_dockerfile()
                     new FileResult
                     {
                         Name = "Dockerfile",
-                        ContentContains = new[] { $"FROM mcr.microsoft.com/azure-functions/dotnet-isolated:4-dotnet-isolated6.0" }
+                        ContentContains = new[] { $"FROM mcr.microsoft.com/azure-functions/dotnet-isolated:4-dotnet-isolated8.0" }
                     }
                 },
                 OutputContains = new[] { "Dockerfile" }