当我运行gcloud preview app deploy时，部署运行良好，直到达到安装gem的地步。错误为：
Gem::RemoteFetcher::FetchError: bad response Not Found 404 (https://rubygems.global.ssl.fastly.net/gems/gcloud-0.8.1.gem)
Installing actionpack 4.2.0
Installing acts_as_commentable_with_threading 2.0.1
An error occurred while installing gcloud (0.8.1), and Bundler cannot continue.
Make sure that `gem install gcloud -v '0.8.1'` succeeds before bundling.
The command '/bin/sh -c bundle install --deployment && rbenv rehash' returned a non-zero code: 5
ERROR
ERROR: build step "gcr.io/cloud-builders/dockerizer" failed: exit status 1
ERROR: (gcloud.preview.app.deploy) Error Response: [2] Build failed; check build logs for details
不确定这是一个已知的错误，还是有办法解决它？
尝试更新您的Google Cloud SDK并再次部署您的代码：
$ gcloud components update