Add dotnet-script to windows worker tools

ubuntu.22.04/Dockerfile

@@ -103,7 +103,7 @@ RUN wget --quiet -O - https://deb.nodesource.com/setup_${NodeJs_Version}.x | bas
 RUN curl -fsSL "https://pkgs.k8s.io/core:/stable:/v${Kubectl_Version}/deb/Release.key" | gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg && \
     echo "deb [signed-by=/etc/apt/keyrings/kubernetes-apt-keyring.gpg] https://pkgs.k8s.io/core:/stable:/v${Kubectl_Version}/deb/ /" | tee /etc/apt/sources.list.d/kubernetes.list && \
     apt-get update && \ 
-    apt-get install -y kubectl && \
+    apt-get install -y kubectl=${Kubectl_Version}.* && \
     rm -rf /var/lib/apt/lists/*
 
 # Install Kubelogin

windows.ltsc2022/Dockerfile

@@ -24,17 +24,24 @@ ARG Octopus_Client_Version=14.3.1789
 ARG Powershell_Version=7.4.6
 ARG Python_Version=3.13.1
 ARG ScriptCs_Version=0.17.1
+# Dotnet version depends on .NET runtime (currently 8.0)
+ARG Dotnet_Script_Version=1.5.0
 ARG Terraform_Version=1.10.4
 
+# Dotnet installation directory (matches path in update_path.cmd)
+ARG Dotnet_Install_Dir=C:\Users\ContainerAdministrator\AppData\Local\Microsoft\dotnet
+
 # Install Choco
 RUN $ProgressPreference = 'SilentlyContinue'; `
     Set-ExecutionPolicy Bypass -Scope Process -Force; `
     [System.Net.ServicePointManager]::SecurityProtocol = [System.Net.ServicePointManager]::SecurityProtocol -bor 3072; `
     iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))
 
 # Install dotnet 8.0+
+# DOTNET_ROOT is required for dotnet tools to locate the runtime
 RUN Invoke-WebRequest 'https://dotnet.microsoft.com/download/dotnet/scripts/v1/dotnet-install.ps1' -outFile 'dotnet-install.ps1'; `
     [Environment]::SetEnvironmentVariable('DOTNET_CLI_TELEMETRY_OPTOUT', '1', 'Machine'); `
+    [Environment]::SetEnvironmentVariable('DOTNET_ROOT', $Env:Dotnet_Install_Dir, 'Machine'); `
     .\dotnet-install.ps1 -Channel '8.0'; `
     rm dotnet-install.ps1
 
@@ -124,6 +131,9 @@ RUN choco install argocd-cli --yes --version $Env:Argo_Cli_Version --no-progress
 ADD .\scripts\update_path.cmd C:\update_path.cmd
 RUN .\update_path.cmd;
 
+# Install dotnet-script, requires dotnet on path
+RUN dotnet tool install -g dotnet-script --version $Env:Dotnet_Script_Version --add-source https://api.nuget.org/v3/index.json
+
 # gcloud requires python on path, update_path.cmd adds python to path. Delete any backup files that exist (~1gb)
 RUN gcloud components install gke-gcloud-auth-plugin --quiet; `
     if (Test-Path C:\google-cloud-sdk\.install\.backup) {Remove-Item -Path C:\google-cloud-sdk\.install\.backup -Force -Recurse}

windows.ltsc2022/README.md

@@ -31,6 +31,7 @@
 - Azure CLI 2.58.0
 - Azure PowerShell 4.5.0
 - Azure PowerShell Modules 11.3.0
+- Dotnet Script 1.5.0
 - Eksctl 0.173.0
 - Google Cloud CLI 467.0.0
 - Google Cloud GKE auth plugin 467.0.0-0 / 0.5.8

windows.ltsc2022/scripts/update_path.cmd

@@ -1,2 +1,2 @@
-setx /M path "%PATH%;C:\google-cloud-sdk\bin;C:\Users\ContainerAdministrator\AppData\Local\Microsoft\dotnet;C:\Program Files\PackageManagement\NuGet\Packages\Octopus.Client.14.3.1248\lib\net462\Octopus.Client.dll"
+setx /M path "%PATH%;C:\google-cloud-sdk\bin;C:\Users\ContainerAdministrator\AppData\Local\Microsoft\dotnet;C:\Program Files\PackageManagement\NuGet\Packages\Octopus.Client.14.3.1248\lib\net462\Octopus.Client.dll;C:\Users\ContainerAdministrator\.dotnet\tools"
 

windows.ltsc2022/spec/windows.ltsc2022.tests.ps1

@@ -21,6 +21,11 @@ Describe  'installed dependencies' {
         $LASTEXITCODE | Should -be 0
     }
 
+    It 'has dotnet-script installed' {
+        dotnet-script --version | Should -Match '1.5.0'
+        $LASTEXITCODE | Should -be 0
+    }
+
     It 'has java installed' {
         java -version 2>&1 | Select-String -Pattern '21\.0\.2' | Should -BeLike "*21.0.2*"
         $LASTEXITCODE | Should -be 0