installing dotnet-sdk for macOS

.cirrus.yml

@@ -2,14 +2,16 @@ task:
   name: macOS
   osx_instance:
     image: high-sierra-xcode-9.4.1
+  env:
+    PATH: $PATH:/usr/local/share/dotnet
   git_submodule_update_init_script: git submodule update --init --recursive
   brew_update_script: brew update
   install_pkg-config_script: brew install pkg-config
   install_sqlite_script: brew install sqlite3
   test_script: make test
   swift_pm_test_script: cd swift; swift build && swift test
   swift_test_script: cd swift; swift package generate-xcodeproj --xcconfig-overrides SQLiteCryptoVFS.xcconfig && xcodebuild -scheme SQLiteCryptoVFS-Package test
-  install_dotnet_script: brew install dotnet-sdk
+  install_dotnet_script: brew cask install dotnet-sdk
   dotnet_test_script: cd dotnet/SQLiteCryptoVFS.Tests; dotnet test
 
 task:
@@ -30,5 +32,5 @@ task:
   install_build-essential_script: apt install build-essential -y
   install_sqlite_script: apt install libsqlite3-dev -y
   install_pkg-config_script: apt install pkg-config -y
-  build_script: make
+  test_script: make test
   dotnet_test_script: cd dotnet/SQLiteCryptoVFS.Tests; dotnet test