Gradle build file: error on upload

build.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.5.+'
    }
}
apply plugin: 'android'
apply plugin: 'maven'

sourceCompatibility = 1.6
targetCompatibility = 1.6

repositories {
    mavenCentral()
}

android {
    compileSdkVersion 17
    buildToolsVersion "17.0.0"

    defaultConfig {
        minSdkVersion 17
        targetSdkVersion 17
    }
}

dependencies {
    compile 'com.android.support:support-v4:13.0.0'
    compile 'commons-codec:commons-codec:1.8'
    compile 'org.bouncycastle:bcprov-jdk16:1.46'
    compile fileTree(dir: 'libs', include: '*.jar')
}

group 'my.groupid'
version '1.0-SNAPSHOT'

uploadArchives {
  repositories {
    mavenDeployer {
      repository(url: "file:///home/gitlab_ci_runner/maven/")
    }
  }
}
task install(dependsOn: uploadArchives)