Added check for CI

Author: AlexeyKuznetsov-DD

dd-smoke-tests/play-2.8/build.gradle

@@ -72,22 +72,27 @@ configurations.testImplementation {
   exclude group: 'com.typesafe.play', module: "play-test_$scalaVer"
 }
 
-// Fix for flaky error: Source directory '/dd-smoke-tests/play-2.8/build/src/play/routes' is not a directory.
-tasks.register('cleanRoutes') {
-  description = 'Deletes routes path if it is a file instead of directory'
-  group = 'build cleanup'
-
-  doFirst {
-    def routesPath = layout.buildDirectory.dir('src/play/routes').get().asFile
-    if (routesPath.exists() && !routesPath.isDirectory()) {
-      logger.lifecycle("Removing file that blocks routes directory: ${routesPath}")
-      routesPath.delete()
+// Fix for flaky test on CI: Source directory '/dd-smoke-tests/play-2.8/build/src/play/routes' is not a directory.
+// Probably, GitLab somehow creates (or restores from cache) file instead of folder.
+def isCI = System.getenv("CI") != null
+
+if (isCI) {
+  tasks.register('fixPlayRoutesDirectory') {
+    description = 'Deletes routes path if it is a file instead of directory'
+    group = 'build cleanup'
+
+    doFirst {
+      def routesPath = layout.buildDirectory.dir('src/play/routes').get().asFile
+      if (routesPath.exists() && !routesPath.isDirectory()) {
+        logger.lifecycle("Removing file that blocks routes directory: ${routesPath}")
+        routesPath.delete()
+      }
     }
   }
-}
 
-tasks.named('compileScala') {
-  dependsOn tasks.named('cleanRoutes')
+  tasks.named('compileScala') {
+    dependsOn tasks.named('fixPlayRoutesDirectory')
+  }
 }
 
 tasks.named('compileTestGroovy').configure {