Add dotty-staging to prepareCommunityBuild

Author: anatoliykmetyuk

community-build/test/scala/dotty/communitybuild/CommunityBuildTest.scala

@@ -102,7 +102,7 @@ class CommunityBuildTest {
 
   @Test def utest = testMill(
     project = "utest",
-    testCommand = "__.__.test",
+    testCommand = s"utest.jvm[$compilerVersion].test",
     extraMillArgs = List("-i", "-D", s"dottyVersion=$compilerVersion")
   )
 

project/Build.scala

@@ -1130,6 +1130,7 @@ object Build {
         (publishLocal in `dotty-compiler-bootstrapped`).value
         (publishLocal in `sbt-dotty`).value
         (publishLocal in `dotty-bootstrapped`).value
+        (publishLocal in `dotty-staging`).value
         val pluginText =
           s"""updateOptions in Global ~= (_.withLatestSnapshots(false))
              |addSbtPlugin("ch.epfl.lamp" % "sbt-dotty" % "$sbtDottyVersion")""".stripMargin