Fixed the CI releases

Fixed the version injection to the SBT build. This will fix the CI failures: https://travis-ci.com/github/mockito/mockito-scala/builds/203412229

Author: mockitoguy

build.gradle

@@ -14,17 +14,12 @@ buildscript {
 
 apply from: "gradle/shipkit.gradle"
 
-task resolveVersion {
-    description = "Resolves version in the 'version.properties' file for the SBT build."
-    doLast {
-        file("version.properties").text = "version=$version"
-    }
-}
-
 task build(type: Exec) {
     commandLine "./build.sh"
+    environment "PROJECT_VERSION", version
 }
 
 task clean(type: Exec) {
     commandLine "./clean.sh"
+    environment "PROJECT_VERSION", version
 }

build.sbt

@@ -13,13 +13,18 @@ lazy val commonSettings =
     organization := "org.mockito",
     //Load version from the file so that Gradle/Shipkit and SBT use the same version
     version := {
-      val pattern = """^version=(.+)$""".r
-      val source  = Source.fromFile("version.properties")
-      val version = Try(source.getLines.collectFirst { case pattern(v) =>
-        v
-      }.get)
-      source.close
-      version.get.replace(".*", "-SNAPSHOT")
+      val versionFromEnv = System.getenv("PROJECT_VERSION")
+      if (versionFromEnv != null && !versionFromEnv.trim().isEmpty()) {
+        versionFromEnv
+      } else {
+        val pattern = """^version=(.+)$""".r
+        val source  = Source.fromFile("version.properties")
+        val version = Try(source.getLines.collectFirst { case pattern(v) =>
+          v
+        }.get)
+        source.close
+        version.get.replace(".*", "-SNAPSHOT")
+      }
     },
     crossScalaVersions := Seq(currentScalaVersion, "2.12.12", "2.11.12"),
     scalafmtOnCompile := true,