Add RepositityTest

build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 val ktor_version: String by project
 val kotlin_version: String by project
 val logback_version: String by project
@@ -16,6 +18,12 @@ application {
     mainClassName = "io.ktor.server.netty.EngineMain"
 }
 
+tasks.withType<KotlinCompile> {
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+
 repositories {
     mavenLocal()
     jcenter()