ruby on rails-Gitlab CI设置错误-找不到JavaScript运行时

Question

我正试图为Ruby on Rails项目设置Gitlab CI，但遇到了一个我不知道如何修复的错误。

该应用程序在Ruby 2.3.1、Rails 5.0上运行，并使用postgreSQL数据库。

我当前的.gitlab.ci.yml文件如下：

# https://hub.docker.com/r/library/ruby/tags/
image: "ruby:2.3.0"
# Pick zero or more services to be used on all builds.
# Only needed when using a docker container to run your tests in.
# Check out: http://docs.gitlab.com/ce/ci/docker/using_docker_images.html#what-is-service
services:
  - redis:latest
  - postgres:latest
  - node:latest
# This is a basic example for a gem or script which doesn't use
# services such as redis or postgres
before_script:
  - gem install bundler         # Bundler is not installed with the image
  - bundle install -j $(nproc)  # Install dependencies
rubocop:
  script:
  - rubocop
rspec:
  script:
  - rspec spec
rails:
  script:
  - rails db:migrate
  - rspec spec

所以它应该使用NodeJS作为运行时。然而，我得到以下错误：

$ rails db:migrate
rails aborted!
Bundler::GemRequireError: There was an error while trying to load the gem 'uglifier'.
Gem Load Error is: Could not find a JavaScript runtime. See https://github.com/rails/execjs for a list of available runtimes.
Backtrace for gem load error is:
/usr/local/bundle/gems/execjs-2.7.0/lib/execjs/runtimes.rb:58:in `autodetect'
/usr/local/bundle/gems/execjs-2.7.0/lib/execjs.rb:5:in `<module:ExecJS>'
/usr/local/bundle/gems/execjs-2.7.0/lib/execjs.rb:4:in `<top (required)>'
/usr/local/bundle/gems/activesupport-5.0.0.rc2/lib/active_support/dependencies.rb:293:in `require'
/usr/local/bundle/gems/activesupport-5.0.0.rc2/lib/active_support/dependencies.rb:293:in `block in require'
/usr/local/bundle/gems/activesupport-5.0.0.rc2/lib/active_support/dependencies.rb:259:in `load_dependency'
/usr/local/bundle/gems/activesupport-5.0.0.rc2/lib/active_support/dependencies.rb:293:in `require'
/usr/local/bundle/gems/uglifier-3.0.0/lib/uglifier.rb:5:in `<top (required)>'

Answer 1

您需要有一个javascript运行时（例如nodejs）。您可以使用以下命令进行安装：

对于Ubuntu用户

sudo apt-get install nodejs

适用于Cents/ReHat用户

sudo yum install nodejs

如果你不能安装nodejs，你可以安装然后使用therubyracer-gem。

存储库中的描述：

将V8 JavaScript解释器嵌入Ruby中。

将此行添加到您的Gemfile

gem 'therubyracer', platforms: :ruby

Answer 2

Gitlab CI可以使用文件.gitlab-ci.yml进行配置，在这种情况下：

before_script:
- apt-get update -qq && apt-get install -y -qq sqlite3 libsqlite3-dev nodejs

可以用于在设置阶段（源）上安装CCD_ 5。

一个完整的带有jekyll的before_script可以看起来像以下代码（例如，这是jekyll minifier所必需的）：

image: ruby:latest
variables:
  JEKYLL_ENV: production
  LC_ALL: C.UTF-8
before_script:
  - apt-get update -qq && apt-get install -y -qq sqlite3 libsqlite3-dev nodejs
  - ruby -v
  - which ruby
  - gem install bundler
  - bundle install
test:
  stage: test
  script:
  - bundle exec jekyll build -d test
  artifacts:
    paths:
    - test
  except:
  - master
pages:
  stage: deploy
  script:
  - bundle exec jekyll build -d public
  artifacts:
    paths:
    - public
  only:
  - master