Add a step to install needed .NET SDKs to pipeline (#174)

Author: Basel Rustum

vsts/vsts.yaml

@@ -13,6 +13,24 @@ jobs:
       vmImage: 'ubuntu-latest'
     timeoutInMinutes: 60
     steps:
+      - task: UseDotNet@2
+        displayName: 'Use .NET Core 5.0 SDK'
+        inputs:
+          version: 5.0.x
+          performMultiLevelLookup: true
+          installationPath: $(Agent.ToolsDirectory)/dotnet
+      - task: UseDotNet@2
+        displayName: 'Use .NET Core 2.1 SDK'
+        inputs:
+          version: 2.1.x
+          performMultiLevelLookup: true
+          installationPath: $(Agent.ToolsDirectory)/dotnet
+      - task: UseDotNet@2
+        displayName: 'Use .NET Core 3.1 SDK'
+        inputs:
+          version: 3.1.x
+          performMultiLevelLookup: true
+          installationPath: $(Agent.ToolsDirectory)/dotnet
       - task: Docker@1
         displayName: 'Start TPM Simulator'
         inputs:
@@ -24,7 +42,6 @@ jobs:
             127.0.0.1:2321:2321
             127.0.0.1:2322:2322
           restartPolicy: unlessStopped
-
       - powershell: ./build.ps1 -clean -configuration Release -build -run
         displayName: build and run
         env:
@@ -49,6 +66,24 @@ jobs:
       vmImage: 'windows-latest'
     timeoutInMinutes: 60
     steps:
+      - task: UseDotNet@2
+        displayName: 'Use .NET Core 5.0 SDK'
+        inputs:
+          version: 5.0.x
+          performMultiLevelLookup: true
+          installationPath: $(Agent.ToolsDirectory)/dotnet
+      - task: UseDotNet@2
+        displayName: 'Use .NET Core 2.1 SDK'
+        inputs:
+          version: 2.1.x
+          performMultiLevelLookup: true
+          installationPath: $(Agent.ToolsDirectory)/dotnet
+      - task: UseDotNet@2
+        displayName: 'Use .NET Core 3.1 SDK'
+        inputs:
+          version: 3.1.x
+          performMultiLevelLookup: true
+          installationPath: $(Agent.ToolsDirectory)/dotnet          
       - powershell: ./build.ps1 -clean -configuration Release -run
         displayName: build and run
         env: