Bowerstalk安装凉亭

我正在使用beantalk来部署在AWS EC2上。我的项目使用Bower来管理库的依赖关系。（但是我项目的主要语言是python-flask。）

据我所知，我可以通过.ebextensions config安装其他软件包。我安装了Redis。

packages: 
  yum:
    gcc-c++: [] 
    make: []
sources:
  /home/ec2-user: http://download.redis.io/releases/redis-2.8.4.tar.gz
commands:
  redis_build:
    command: make
    cwd: /home/ec2-user/redis-2.8.4
  redis_config_001:
    command: sed -i -e "s/daemonize no/daemonize yes/" redis.conf
    cwd: /home/ec2-user/redis-2.8.4
  redis_config_002:
    command: sed -i -e "s/# maxmemory <bytes>/maxmemory 500MB/" redis.conf
    cwd: /home/ec2-user/redis-2.8.4
  redis_config_003:
    command: sed -i -e "s/# maxmemory-policy volatile-lru/maxmemory-policy allkeys-lru/" redis.conf
    cwd: /home/ec2-user/redis-2.8.4
  redis_server:
    command: src/redis-server redis].conf
    cwd: /home/ec2-user/redis-2.8.4

我添加了npm和bower，但是它不起作用。

packages: 
  yum:
    gcc-c++: [] 
    make: []
sources:
  /home/ec2-user: http://download.redis.io/releases/redis-2.8.4.tar.gz
commands:
  redis_build:
    command: make
    cwd: /home/ec2-user/redis-2.8.4
  redis_config_001:
    command: sed -i -e "s/daemonize no/daemonize yes/" redis.conf
    cwd: /home/ec2-user/redis-2.8.4
  redis_config_002:
    command: sed -i -e "s/# maxmemory <bytes>/maxmemory 500MB/" redis.conf
    cwd: /home/ec2-user/redis-2.8.4
  redis_config_003:
    command: sed -i -e "s/# maxmemory-policy volatile-lru/maxmemory-policy allkeys-lru/" redis.conf
    cwd: /home/ec2-user/redis-2.8.4
  redis_server:
    command: src/redis-server redis].conf
    cwd: /home/ec2-user/redis-2.8.4
  npm_install:
    command: "yum install -y npm"
  bower_install:
    command: "npm install -g bower"
  bower_install_packages:
    command: bower install

我总是喜欢这样的错误。

Upload Complete.
INFO: Environment update is starting.                               
INFO: Deploying new version to instance(s).                         
ERROR: [Instance: i-41397fb2 Module: AWSEBAutoScalingGroup ConfigSet: null] Command failed on instance. Return code: 1 Output: [CMD-AppDeploy/AppDeployStage0/EbExtensionPreBuild] command failed with error code 1: Error occurred during build: Command bower_install failed.
INFO: Command execution completed on all instances. Summary: [Successful: 0, Failed: 1].

我怎么解决这个问题？