[release/8.0.1xx] Support shared .NET installation

Author: ellahathaway

src/SourceBuild/content/eng/pipelines/templates/jobs/sdk-diff-tests.yml

@@ -106,14 +106,18 @@ jobs:
 
       eng/common/build.sh -bl --projects $(Build.SourcesDirectory)/test/Microsoft.DotNet.SourceBuild.SmokeTests/Microsoft.DotNet.SourceBuild.SmokeTests.csproj --restore
 
+      source ./eng/common/tools.sh
+      InitializeDotNetCli true
+
       echo "##vso[task.setvariable variable=Platform]$platform"
       echo "##vso[task.setvariable variable=MsftSdkTarballPath]$(Pipeline.Workspace)/Artifacts/$msft_sdk_tarball_name"
       echo "##vso[task.setvariable variable=SdkTarballPath]$(Pipeline.Workspace)/Artifacts/$sdk_tarball_name"
+      echo "##vso[task.setvariable variable=DotNetPath]$_InitializeDotNetCli"
     displayName: Prepare Tests
     workingDirectory: $(Build.SourcesDirectory)
 
   - script: >
-      .dotnet/dotnet test
+      $(DotNetPath)/dotnet test
       $(Build.SourcesDirectory)/test/Microsoft.DotNet.SourceBuild.SmokeTests/Microsoft.DotNet.SourceBuild.SmokeTests.csproj
       --filter "Category=SdkContent"
       --logger:'trx;LogFileName=$(Agent.JobName)_SDKDiffTests.trx'
@@ -169,6 +173,7 @@ jobs:
   - ${{ if and(eq(parameters.publishTestResultsPr, 'true'), or(eq(variables['Build.SourceBranch'], 'refs/heads/main'), startsWith(variables['Build.SourceBranch'], 'refs/heads/release'))) }}:
     - template: ../steps/create-baseline-update-pr.yml
       parameters:
+        dotnetPath: $(DotNetPath)
         pipeline: sdk
         repo: dotnet/installer
         originalFilesDirectory: src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/baselines

src/SourceBuild/content/eng/pipelines/templates/stages/vmr-scan.yml

@@ -26,19 +26,23 @@ stages:
     - script: |
         source ./eng/common/tools.sh
         InitializeDotNetCli true
-        ./.dotnet/dotnet tool restore
-      displayName: Initialize tooling
+        echo "##vso[task.setvariable variable=DotNetPath]$_InitializeDotNetCli"
+      displayName: Install .NET CLI
+  
+    - script: |
+        $(DotNetPath)/dotnet tool restore
+      displayName: Restore tools
       workingDirectory: $(Build.SourcesDirectory)/src/installer
 
     - script: |
         set -e
-        sha=`./.dotnet/dotnet darc vmr get-version --vmr "$(Build.SourcesDirectory)" installer`
+        sha=`$(DotNetPath)/dotnet darc vmr get-version --vmr "$(Build.SourcesDirectory)" installer`
         echo "##vso[build.addbuildtag]$sha"
       displayName: Tag the build
       workingDirectory: $(Build.SourcesDirectory)/src/installer
 
     - script: >
-        ./.dotnet/dotnet darc vmr scan-binary-files
+        $(DotNetPath)/dotnet darc vmr scan-binary-files
         --vmr "$(Build.SourcesDirectory)"
         --tmp "$(Agent.TempDirectory)"
         --baseline-file "src/VirtualMonoRepo/allowed-binaries.txt"
@@ -48,7 +52,7 @@ stages:
       continueOnError: true
 
     - script: >
-        ./.dotnet/dotnet darc vmr scan-cloaked-files
+        $(DotNetPath)/dotnet darc vmr scan-cloaked-files
         --vmr "$(Build.SourcesDirectory)"
         --tmp "$(Agent.TempDirectory)"
         || (echo '##[error]Found cloaked files in the VMR' && exit 1)

src/SourceBuild/content/eng/pipelines/templates/steps/create-baseline-update-pr.yml

@@ -1,4 +1,8 @@
 parameters:
+- name: dotnetPath
+  type: string
+  default: '$(Build.SourcesDirectory)/.dotnet'
+
 # The pipeline that is being run
 # Used to determine the correct baseline update tool to run
 # Currently only supports "sdk" and "license"
@@ -31,7 +35,7 @@ steps:
 
       branchName=$(echo "$(Build.SourceBranch)" | sed 's/refs\/heads\///g')
 
-      .dotnet/dotnet run \
+      $(DotNetPath)/dotnet run \
           --project eng/tools/CreateBaselineUpdatePR/ \
           --property:RestoreSources="$restoreSources" \
           "${{ parameters.pipeline }}" \

src/SourceBuild/content/eng/pipelines/vmr-license-scan.yml

@@ -144,6 +144,7 @@ jobs:
   - script: |
       source ./eng/common/tools.sh
       InitializeDotNetCli true
+      echo "##vso[task.setvariable variable=DotNetPath]$_InitializeDotNetCli"
     displayName: Install .NET SDK
     workingDirectory: $(Build.SourcesDirectory)
 
@@ -167,6 +168,7 @@ jobs:
 
   - template: templates/steps/create-baseline-update-pr.yml
     parameters:
+      dotnetPath: $(DotNetPath)
       pipeline: license
       repo: dotnet/installer
       originalFilesDirectory: src/SourceBuild/content/test/Microsoft.DotNet.SourceBuild.SmokeTests/assets/baselines/licenses