Set DOTNET_ROOT

Author: ajaybhargavb

.azure/pipelines/blazor-daily-tests.yml

@@ -34,6 +34,7 @@ jobs:
       displayName: 'Run Blazor tests - macOS/Safari'
       condition: succeededOrFailed()
       env:
+        DOTNET_ROOT: '.\.dotnet'
         # Secrets need to be explicitly mapped to env variables.
         E2ETESTS_Sauce__Username: '$(asplab-sauce-labs-username)'
         E2ETESTS_Sauce__AccessKey: '$(asplab-sauce-labs-access-key)'
@@ -50,6 +51,7 @@ jobs:
       displayName: 'Run Blazor tests - Android/Chrome'
       condition: succeededOrFailed()
       env:
+        DOTNET_ROOT: '.\.dotnet'
         # Secrets need to be explicitly mapped to env variables.
         E2ETESTS_Sauce__Username: '$(asplab-sauce-labs-username)'
         E2ETESTS_Sauce__AccessKey: '$(asplab-sauce-labs-access-key)'