title: kotlin + gradle+ intellij - no repositories are defined
body: <p>anyone can help me out please? i got just project source code and dockefile from ex-colleague without explanation of work but i got in trouble now with time limitation. 
  please please please.</p>
  
  <hr>
  
  <p>i got this error message below</p>
  
  <pre><code>Could not determine the dependencies of task ':compileKotlin'.
  Could not resolve all files for configuration ':kotlinCompilerClasspath'.
  Cannot resolve external dependency org.jetbrains.kotlin:kotlin-compiler-embeddable:1.3.41 
  because no repositories are defined.
  </code></pre>
  
  <hr>
  
  <p>that's my build.gradle below</p>
  
  <pre><code>plugins {
      id 'idea'
      id "org.jetbrains.kotlin.jvm"  version "1.3.41"
      id "org.jetbrains.kotlin.kapt" version "1.3.41" apply false
      id "org.jetbrains.kotlin.plugin.spring" version "1.3.41" apply false
      id "org.jetbrains.kotlin.plugin.jpa"  version "1.3.41" apply false
      id "org.springframework.boot" version "2.1.6.RELEASE" apply false
      id "io.spring.dependency-management" version "1.0.7.RELEASE" apply false
      id "com.palantir.docker" version "0.22.1" apply false        
  }
  subprojects {
      group = "bawoori"
      version = "1.0"
      sourceCompatibility = 1.8
      apply plugin: "kotlin"
      apply plugin: "io.spring.dependency-management"
  
      repositories {
          mavenCentral()
          jcenter()
      }
      dependencies {
          implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
          classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.41"
      }
      compileKotlin {
          kotlinOptions {
              freeCompilerArgs = ['-Xjsr305=strict']
              jvmTarget = '1.8'
          }
      }
      compileTestKotlin {
          kotlinOptions {
              freeCompilerArgs = ['-Xjsr305=strict']
              jvmTarget = '1.8'
          }
      }
  }
  </code></pre>