我目前有一个问题，以建立和运行我的应用使用bitbucket管道：
我有一个关于该高速缓存文件夹不可写的错误：

warning Skipping preferred cache folder "/home/node/.cache/yarn" because it is not writable.
warning Skipping preferred cache folder "/tmp/.yarn-cache-1000" because it is not writable.
warning Skipping preferred cache folder "/tmp/.yarn-cache" because it is not writable.
error Yarn hasn't been able to find a cache folder it can use. Please use the explicit -- 
cache-folder option to tell it what location to use, or make one of the preferred locations 
writable.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

我使用的是bitbucket-pipelines.yml和一个停靠文件。
谢谢