Supporting dotnet 10.0 preview version

src/dotnet/README.md

@@ -21,6 +21,8 @@ This Feature installs the latest .NET SDK, which includes the .NET CLI and the s
 | aspNetCoreRuntimeVersions | Enter additional ASP.NET Core runtime versions, separated by commas. Use 'latest' for the latest version, 'lts' for the latest LTS version, 'X.Y' or 'X.Y.Z' for a specific version. | string | - |
 | workloads | Enter additional .NET SDK workloads, separated by commas. Use 'dotnet workload search' to learn what workloads are available to install. | string | - |
 
+The dotnet '10.0' option currently points to the '10.0-preview' version of dotnet. The dotnet '10.0' stable version is expected to be released by end of 2025. The preview version is still under development and is generally not supported for production use.
+
 ## Customizations
 
 ### VS Code Extensions

src/dotnet/devcontainer-feature.json

@@ -1,6 +1,6 @@
 {
     "id": "dotnet",
-    "version": "2.2.1",
+    "version": "2.3.0",
     "name": "Dotnet CLI",
     "documentationURL": "https://github.com/devcontainers/features/tree/main/src/dotnet",
     "description": "This Feature installs the latest .NET SDK, which includes the .NET CLI and the shared runtime. Options are provided to choose a different version or additional versions.",
@@ -11,6 +11,7 @@
                 "latest",
                 "lts",
                 "none",
+                "10.0-preview",
                 "8.0",
                 "7.0",
                 "6.0"

src/dotnet/install.sh

@@ -108,7 +108,9 @@ done
 check_packages wget ca-certificates icu-devtools
 
 for version in "${versions[@]}"; do
-    install_sdk "$version"
+    # Remove '-preview' from version if present
+    clean_version="$(echo "$version" | sed 's/-preview$//')"
+    install_sdk "$clean_version"
 done
 
 for version in "${dotnetRuntimeVersions[@]}"; do

src/dotnet/scripts/vendor/README.md

@@ -23,5 +23,6 @@ dotnet-install.sh [--version latest] --channel 6.0 [--quality GA]
 dotnet-install.sh [--version latest] --channel 6.0.4xx [--quality GA]
 dotnet-install.sh [--version latest] --channel 8.0 --quality preview
 dotnet-install.sh [--version latest] --channel 8.0 --quality daily
+dotnet-install.sh [--version latest] --channel 10.0 --quality preview
 dotnet-install.sh --version 6.0.413
 ```

test/dotnet/install_dotnet_multiple_versions.sh

@@ -22,14 +22,8 @@ is_dotnet_sdk_version_installed "8.0"
 check ".NET SDK 7.0 installed" \
 is_dotnet_sdk_version_installed "7.0"
 
-check ".NET SDK 6.0 installed" \
-is_dotnet_sdk_version_installed "6.0"
-
-check ".NET SDK 5.0 installed" \
-is_dotnet_sdk_version_installed "5.0"
-
-check ".NET Core SDK 3.1 installed" \
-is_dotnet_sdk_version_installed "3.1"
+check ".NET SDK 10.0 installed" \
+is_dotnet_sdk_version_installed "10.0"
 
 check "Build example class library" \
 dotnet build projects/multitargeting
@@ -43,14 +37,8 @@ dotnet run --project projects/net8.0
 check "Build and run .NET 7.0 project" \
 dotnet run --project projects/net7.0
 
-check "Build and run .NET 6.0 project" \
-dotnet run --project projects/net6.0
-
-check "Build and run .NET 5.0 project" \
-dotnet run --project projects/net5.0
-
-check "Build and run .NET Core 3.1 project" \
-dotnet run --project projects/netcoreapp3.1
+check "Build and run .NET 10.0 project" \
+dotnet run --project projects/net10.0
 
 # Report results
 # If any of the checks above exited with a non-zero exit code, the test will fail.

test/dotnet/install_dotnet_multiple_versions_preview.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+
+set -e
+
+# Optional: Import test library bundled with the devcontainer CLI
+# See https://github.com/devcontainers/cli/blob/HEAD/docs/features/test.md#dev-container-features-test-lib
+# Provides the 'check' and 'reportResults' commands.
+source dev-container-features-test-lib
+
+# Feature-specific tests
+# The 'check' command comes from the dev-container-features-test-lib. Syntax is...
+# check <LABEL> <cmd> [args...]
+source dotnet_env.sh
+source dotnet_helpers.sh
+
+check ".NET SDK 9.0 installed" \
+is_dotnet_sdk_version_installed "9.0"
+
+check ".NET SDK 8.0 installed" \
+is_dotnet_sdk_version_installed "8.0"
+
+check ".NET SDK 7.0 installed" \
+is_dotnet_sdk_version_installed "7.0"
+
+check ".NET SDK 10.0 installed" \
+is_dotnet_sdk_version_installed "10.0"
+
+check "Build example class library" \
+dotnet build projects/multitargeting
+
+check "Build and run .NET 9.0 project" \
+dotnet run --project projects/net9.0
+
+check "Build and run .NET 8.0 project" \
+dotnet run --project projects/net8.0
+
+check "Build and run .NET 7.0 project" \
+dotnet run --project projects/net7.0
+
+check "Build and run .NET 10.0 project" \
+dotnet run --project projects/net10.0
+
+# Report results
+# If any of the checks above exited with a non-zero exit code, the test will fail.
+reportResults
+
+

test/dotnet/install_dotnet_specific_release.sh

@@ -13,13 +13,13 @@ source dev-container-features-test-lib
 source dotnet_env.sh
 source dotnet_helpers.sh
 
-expected=$(fetch_latest_version_in_channel "3.1")
+expected=$(fetch_latest_version_in_channel "8.0")
 
-check ".NET Core SDK 3.1 installed" \
+check ".NET Core SDK 8.0 installed" \
 is_dotnet_sdk_version_installed "$expected"
 
 check "Build and run example project" \
-dotnet run --project projects/netcoreapp3.1 
+dotnet run --project projects/net8.0 
 
 # Report results
 # If any of the checks above exited with a non-zero exit code, the test will fail.

test/dotnet/install_dotnet_specific_release_and_feature_band.sh

@@ -13,11 +13,11 @@ source dev-container-features-test-lib
 source dotnet_env.sh
 source dotnet_helpers.sh
 
-check ".NET SDK 5.0.3xx installed" \
-is_dotnet_sdk_version_installed "5.0.3"
+check ".NET SDK 8.0.3xx installed" \
+is_dotnet_sdk_version_installed "8.0.3"
 
 check "Build and run example project" \
-dotnet run --project projects/net5.0 
+dotnet run --project projects/net8.0 
 
 # Report results
 # If any of the checks above exited with a non-zero exit code, the test will fail.

test/dotnet/projects/net10.0/Program.cs

@@ -0,0 +1,32 @@
+using Newtonsoft.Json;
+
+string json = """
+{
+  "Name": "Inception",
+  "ReleaseDate": "2010-07-08T00:00:00",
+  "Genres": [
+    "Action",
+    "Thriller"
+  ]
+}
+""";
+
+Movie? m = JsonConvert.DeserializeObject<Movie>(json);
+
+if (m == default)
+{
+    Console.WriteLine("Decoding failed!");
+}
+else
+{
+    Console.WriteLine($"Movie name: {m.Name}");
+    Console.WriteLine($"Release Date: {m.ReleaseDate}");
+    Console.WriteLine($"Genres: {string.Join(", ", m.Genres)}");
+}
+
+class Movie(string? name, DateTime releaseDate, List<string>? genres)
+{
+    public string Name { get; set; } = name ?? "Default Name";
+    public DateTime ReleaseDate { get; set; } = releaseDate;
+    public List<string> Genres { get; set; } = genres ?? [];
+}

test/dotnet/projects/net10.0/example_project.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
+  </ItemGroup>
+
+</Project>

test/dotnet/scenarios.json

@@ -9,20 +9,20 @@
         }
     },
     "install_dotnet_specific_release": {
-        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-20.04",
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04",
         "remoteUser": "vscode",
         "features": {
             "dotnet": {
-                "version": "3.1"
+                "version": "8.0"
             }
         }
     },
     "install_dotnet_specific_release_and_feature_band": {
-        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-20.04",
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu-24.04",
         "remoteUser": "vscode",
         "features": {
             "dotnet": {
-                "version": "5.0.3xx"
+                "version": "8.0.3xx"
             }
         }
     },
@@ -40,17 +40,29 @@
         "remoteUser": "vscode",
         "features": {
             "dotnet": {
-                "version": "9.0",
+                "version": "10.0-preview",
                 "additionalVersions": [
+                    "9.0",
                     "8.0",
-                    "7.0",
-                    "6.0",
-                    "5.0",
-                    "3.1"
+                    "7.0"
                 ]
             }
         }
     },
+    "install_dotnet_multiple_versions_preview": {
+        "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
+        "remoteUser": "vscode",
+        "features": {
+            "dotnet": {
+                "version": "9.0",
+                "additionalVersions": [
+                    "10.0-preview",
+                    "8.0",
+                    "7.0"
+                ]
+            }
+        }
+    },    
     "install_dotnet_global_tool": {
         "image": "mcr.microsoft.com/devcontainers/base:ubuntu",
         "remoteUser": "vscode",