Try pipeline caching (Azure#20603)

Author: pakrym

doc/ApiDocGeneration/assets/docgen.csproj

@@ -8,6 +8,7 @@
     <ECMA2YmlVersion>1.0.644-alpha</ECMA2YmlVersion>
     <PopImportVersion>1.0.0</PopImportVersion>
     <NuGetPackageRoot>$(UserProfile)\.nuget\packages</NuGetPackageRoot>
+    <NuGetPackageRoot Condition="'$(NUGET_PACKAGES)' != ''">$(NUGET_PACKAGES)</NuGetPackageRoot>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.DocAsCode.ECMA2Yaml" Version="$(ECMA2YmlVersion)" />

eng/pipelines/templates/jobs/ci.mgmt.yml

@@ -10,9 +10,6 @@ jobs:
           if "$(BuildConfiguration)" == "Release" (set SkipTests=true) else (set SkipTests=false)
           dotnet msbuild mgmt.proj /v:m /t:CreateNugetPackage /p:Configuration=$(BuildConfiguration) /p:SkipTests=%SkipTests% /p:PackageOutputPath=$(Build.ArtifactStagingDirectory) /p:Scope=${{parameters.Scope}} /p:ForPublishing=$(ShouldPublish) $(loggingArgs) $(RPScopeArgs)"
         displayName: "Build & Package"
-        env:
-          DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-          DOTNET_CLI_TELEMETRY_OPTOUT: 1
       - task: PowerShell@2
         displayName: "Verify generated code"
         condition: and(succeeded(), ne(variables['System.TeamProject'],'internal'))
@@ -66,9 +63,6 @@ jobs:
       - template: /eng/pipelines/templates/steps/install-dotnet.yml
       - script: "dotnet msbuild mgmt.proj /v:n /t:RunTests /p:Scope=${{parameters.Scope}} /p:ForPublishing=$(ShouldPublish) /clp:ShowtimeStamp $(RPScopeArgs)"
         displayName: "Build & Run Tests"
-        env:
-          DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-          DOTNET_CLI_TELEMETRY_OPTOUT: 1
       - task: PublishTestResults@2
         condition: succeededOrFailed()
         inputs:

eng/pipelines/templates/jobs/ci.tests.yml

@@ -57,9 +57,6 @@ jobs:
           /p:Configuration=$(BuildConfiguration) $(ConvertToProjectReferenceOption)
           /p:CollectCoverage=$(CollectCoverage) /p:CodeCoverageDirectory=${{ parameters.ServiceDirectory }}
         displayName: "Build & Test ($(TestTargetFramework))"
-        env:
-          DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-          DOTNET_CLI_TELEMETRY_OPTOUT: 1
       - task: PublishTestResults@2
         condition: always()
         displayName: "Publish Results ($(TestTargetFramework))"

eng/pipelines/templates/jobs/ci.yml

@@ -77,9 +77,6 @@ jobs:
           /p:CommitSHA=$(Build.SourceVersion)
           /p:ArtifactsPackagesDir=$(Build.ArtifactStagingDirectory)
         displayName: "Build and Package"
-        env:
-          DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-          DOTNET_CLI_TELEMETRY_OPTOUT: 1
 
       - template: /eng/common/pipelines/templates/steps/create-apireview.yml
         parameters:
@@ -133,9 +130,6 @@ jobs:
       - template: /eng/pipelines/templates/steps/install-dotnet.yml
       - task: PowerShell@2
         displayName: "Verify generated code"
-        env:
-          DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-          DOTNET_CLI_TELEMETRY_OPTOUT: 1
         inputs:
           filePath: "eng/scripts/CodeChecks.ps1"
           arguments: >

eng/pipelines/templates/jobs/live.tests.yml

@@ -118,8 +118,6 @@ jobs:
 
         displayName: "Build & Test (all tests for $(TestTargetFramework))"
         env:
-          DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
-          DOTNET_CLI_TELEMETRY_OPTOUT: 1
           AZURE_TEST_MODE: $(TestMode)
           ${{ each var in parameters.EnvVars }}:
             ${{ var.key }}: ${{ var.value }}

eng/pipelines/templates/steps/install-dotnet.yml

@@ -2,14 +2,21 @@
 #steps: []
 # Installation steps need to be uncommented when switching to a newer SDK that's not available on DevOps agents
 steps:
- - task: UseDotNet@2
-   displayName: 'Use .NET Core SDK'
-   inputs:
-     useGlobalJson: true
-     performMultiLevelLookup: true
- - task: UseDotNet@2
-   condition: ne(variables['Agent.OS'], 'Windows_NT') # Windows supports MultiLevelLookup and doesn't need explicit framework installation
-   displayName: 'Use .NET Core 2.1 runtime'
-   inputs:
-     packageType: runtime
-     version: "2.1.x"
+  - task: UseDotNet@2
+    displayName: 'Use .NET Core SDK'
+    inputs:
+      useGlobalJson: true
+      performMultiLevelLookup: true
+  - task: UseDotNet@2
+    condition: ne(variables['Agent.OS'], 'Windows_NT') # Windows supports MultiLevelLookup and doesn't need explicit framework installation
+    displayName: 'Use .NET Core 2.1 runtime'
+    inputs:
+      packageType: runtime
+      version: "2.1.x"
+  - task: Cache@2
+    inputs:
+      key: 'nuget | "$(Agent.OS)" | $(Build.SourcesDirectory)/eng/Packages.Data.props'
+      restoreKeys: |
+        nuget | "$(Agent.OS)"
+      path: $(NUGET_PACKAGES)
+    displayName: Cache NuGet packages

eng/pipelines/templates/variables/globals.yml

@@ -11,3 +11,6 @@ variables:
   DocFxVersion: 'v2.56.1'
   CollectCoverage: false
   DECODE_PERCENTS: false
+  NUGET_PACKAGES: $(Pipeline.Workspace)/.nuget/packages/
+  DOTNET_SKIP_FIRST_TIME_EXPERIENCE: 1
+  DOTNET_CLI_TELEMETRY_OPTOUT: 1