CircleCI Android约束布局不起作用

我现在正在为我的项目使用CircleCI。我也在我的项目中实现新的constraintLayout。现在，我被CircleCI大楼困住了。它在gradle -dependencies运行时向我显示了这一点：

File /home/ubuntu/.android/repositories.cfg could not be loaded.
FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring project ':app'.
> You have not accepted the license agreements of the following SDK components:
  [com.android.support.constraint:constraint-layout:1.0.0-alpha3, com.android.support.constraint:constraint-layout-solver:1.0.0-alpha3].
  Before building your project, you need to accept the license agreements and complete the installation of the missing components using the Android Studio SDK Manager.
  Alternatively, to learn how to transfer the license agreements from one workstation to another, go to http://d.android.com/r/studio-ui/export-licenses.html

这是我在.yml文件中的配置：

#Install android build tools, platforms
#Supported versions here https://circleci.com/docs/android
machine:
    java:
        version: openjdk8
    environment:
        ANDROID_HOME: /usr/local/android-sdk-linux

dependencies:
    pre:
        - echo y | android list sdk
        - echo y | android update sdk --no-ui --all --filter "tools"
        - echo y | android update sdk --no-ui --all --filter "platform-tools"
        - echo y | android update sdk --no-ui --all --filter "build-tools-24.0.0"
        - echo y | android update sdk --no-ui --all --filter "android-24"
        - echo y | android update sdk --no-ui --all --filter "extra-google-m2repository"
        - echo y | android update sdk --no-ui --all --filter "extra-google-google_play_services"
        - echo y | android update sdk --no-ui --all --filter "extra-android-support"
        - echo y | android update sdk --no-ui --all --filter "extra-android-m2repository"
        - (./gradlew -version):
                    timeout: 360
    override:
        #- ANDROID_HOME=/usr/local/android-sdk-linux ./gradlew dependencies
        - export TERM="dumb"; if [ -e ./gradlew ]; then ./gradlew clean dependencies -stacktrace;else gradle clean dependencies -stacktrace;fi

#Pull any submodules
checkout:
  post:
    - git submodule init
    - git submodule update

#-PdisablePreDex is a must else gradle just dies due to memory limit
#Replace
test:
    override:
        - (./gradlew assemble -PdisablePreDex):
            timeout: 360
        - cp -r ${HOME}/${CIRCLE_PROJECT_REPONAME}/app/build/outputs/apk/ $CIRCLE_ARTIFACTS
        - emulator -avd circleci-android22 -no-audio -no-window:
            background: true
            parallel: true
        # wait for it to have booted
        - circle-android wait-for-boot
        # run tests  against the emulator.
        - ./gradlew connectedAndroidTest

#Deploy when tests pass
deployment:
    #production:
    #    branch: master
    #    commands:
    #        - (./gradlew clean assembleRelease crashlyticsUploadDistributionRelease -PdisablePreFex):
    #            timeout: 720

    staging:
        branch: staging
        commands:
             - (./gradlew clean assembleStaging crashlyticsUploadDistributionStaging -PdisablePreFex):
                timeout: 720

我在何时检查构建日志

echo y | android update sdk --no-ui --all --filter "extra-android-m2repository"

命令运行，结果如下：

November 20, 2015
Do you accept the license 'android-sdk-license-c81a61d9' [y/n]: 
Installing Archives:
  Preparing to install archives
  Downloading Android Support Repository, revision 33
  Installing Android Support Repository, revision 33
    Installed Android Support Repository, revision 33
  Done. 1 package installed.

我的课路径是：

classpath 'com.android.tools.build:gradle:2.2.0-alpha4'

我不确定自己做错了什么，还是需要添加更多内容。请提出建议。谢谢。