ruby-on-rails - Docker未安装yarn

Question

我正在尝试像下面这样运行 docker。但即使我安装了 yarn 它仍然不起作用。运行 Rails 时出错:未安装 yarn 。

Dockerfile:

FROM rails:on-build
EXPOSE 3000
CMD [ "rails" , "s" , "-b" , "0.0.0.0" , "-p", "3000" ]

rails/Dockerfile:

FROM ruby:2.6.2
RUN apt-get update -y && apt-get install -y build-essential libpq-dev nodejs sqlite3
ONBUILD COPY app /opt/app
ONBUILD WORKDIR /opt/app
ONBUILD EXPOSE 3000
ONBUILD RUN bundle install
ONBUILD RUN rake db:migrate
ONBUILD RUN rake db:seed

run.sh:

docker-machine create -d virtualbox Char
eval $(docker-machine env Char)
docker build -t rails:on-build . #this runs ok
docker build -t "thisdir:Dockerfile" . #this command triggers the error

错误:

Sending build context to Docker daemon  3.584kB
Step 1/4 : FROM rails:on-build
# Executing 6 build triggers
 ---> Using cache
 ---> Running in 7bfd996846cd
      create
      create  README.md
      create  Rakefile
      create  .ruby-version
      create  config.ru
      create  .gitignore
      create  Gemfile
         run  git init from "."
Initialized empty Git repository in /opt/app/.git/
      create  package.json
      create  app
      create  app/assets/config/manifest.js
      create  app/assets/stylesheets/application.css
      create  app/channels/application_cable/channel.rb
      create  app/channels/application_cable/connection.rb
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/javascript/channels/consumer.js
      create  app/javascript/channels/index.js
      create  app/javascript/packs/application.js
      create  app/jobs/application_job.rb
      create  app/mailers/application_mailer.rb
      create  app/models/application_record.rb
      create  app/views/layouts/application.html.erb
      create  app/views/layouts/mailer.html.erb
      create  app/views/layouts/mailer.text.erb
      create  app/assets/images/.keep
      create  app/controllers/concerns/.keep
      create  app/models/concerns/.keep
      create  bin
      create  bin/rails
      create  bin/rake
      create  bin/setup
      create  bin/yarn
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/cable.yml
      create  config/puma.rb
      create  config/spring.rb
      create  config/storage.yml
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/application_controller_renderer.rb
      create  config/initializers/assets.rb
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/content_security_policy.rb
      create  config/initializers/cookies_serializer.rb
      create  config/initializers/cors.rb
      create  config/initializers/filter_parameter_logging.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/new_framework_defaults_6_0.rb
      create  config/initializers/wrap_parameters.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/master.key
      append  .gitignore
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  lib
      create  lib/tasks
      create  lib/tasks/.keep
      create  lib/assets
      create  lib/assets/.keep
      create  log
      create  log/.keep
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
      create  public/apple-touch-icon-precomposed.png
      create  public/apple-touch-icon.png
      create  public/favicon.ico
      create  public/robots.txt
      create  tmp
      create  tmp/.keep
      create  tmp/pids
      create  tmp/pids/.keep
      create  tmp/cache
      create  tmp/cache/assets
      create  vendor
      create  vendor/.keep
      create  test/fixtures
      create  test/fixtures/.keep
      create  test/fixtures/files
      create  test/fixtures/files/.keep
      create  test/controllers
      create  test/controllers/.keep
      create  test/mailers
      create  test/mailers/.keep
      create  test/models
      create  test/models/.keep
      create  test/helpers
      create  test/helpers/.keep
      create  test/integration
      create  test/integration/.keep
      create  test/channels/application_cable/connection_test.rb
      create  test/test_helper.rb
      create  test/system
      create  test/system/.keep
      create  test/application_system_test_case.rb
      create  storage
      create  storage/.keep
      create  tmp/storage
      create  tmp/storage/.keep
      remove  config/initializers/cors.rb
      remove  config/initializers/new_framework_defaults_6_0.rb
         run  bundle install
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
Fetching gem metadata from https://rubygems.org/............
Fetching gem metadata from https://rubygems.org/.
Resolving dependencies...
Fetching rake 13.0.1
Installing rake 13.0.1
Fetching concurrent-ruby 1.1.5
Installing concurrent-ruby 1.1.5
Fetching i18n 1.7.0
Installing i18n 1.7.0
Fetching minitest 5.13.0
Installing minitest 5.13.0
Fetching thread_safe 0.3.6
Installing thread_safe 0.3.6
Fetching tzinfo 1.2.5
Installing tzinfo 1.2.5
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Installing zeitwerk 2.2.2
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Installing activesupport 6.0.2.1
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Using bundler 2.1.1
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Bundle complete! 17 Gemfile dependencies, 75 gems now installed.
Bundled gems are installed into `/usr/local/bundle`
         run  bundle binstubs bundler
The dependency tzinfo-data (>= 0) will be unused by any of the platforms Bundler is installing for. Bundler is installing for ruby but the dependency is only for x86-mingw32, x86-mswin32, x64-mingw32, java. To add those platforms to the bundle, run `bundle lock --add-platform x86-mingw32 x86-mswin32 x64-mingw32 java`.
         run  bundle exec spring binstub --all
/usr/local/lib/ruby/2.6.0/bundler/vendor/fileutils/lib/fileutils.rb:1186: warning: already initialized constant Bundler::FileUtils::Entry_::S_IF_DOOR
/usr/local/bundle/gems/bundler-2.1.1/lib/bundler/vendor/fileutils/lib/fileutils.rb:1284: warning: previous definition of S_IF_DOOR was here
/usr/local/lib/ruby/2.6.0/bundler/vendor/fileutils/lib/fileutils.rb:1444: warning: already initialized constant Bundler::FileUtils::Entry_::DIRECTORY_TERM
/usr/local/bundle/gems/bundler-2.1.1/lib/bundler/vendor/fileutils/lib/fileutils.rb:1568: warning: previous definition of DIRECTORY_TERM was here
/usr/local/lib/ruby/2.6.0/bundler/vendor/fileutils/lib/fileutils.rb:1499: warning: already initialized constant Bundler::FileUtils::OPT_TABLE
/usr/local/bundle/gems/bundler-2.1.1/lib/bundler/vendor/fileutils/lib/fileutils.rb:1626: warning: previous definition of OPT_TABLE was here
/usr/local/lib/ruby/2.6.0/bundler/vendor/fileutils/lib/fileutils.rb:1553: warning: already initialized constant Bundler::FileUtils::LOW_METHODS
/usr/local/bundle/gems/bundler-2.1.1/lib/bundler/vendor/fileutils/lib/fileutils.rb:1685: warning: previous definition of LOW_METHODS was here
/usr/local/lib/ruby/2.6.0/bundler/vendor/fileutils/lib/fileutils.rb:1560: warning: already initialized constant Bundler::FileUtils::METHODS
/usr/local/bundle/gems/bundler-2.1.1/lib/bundler/vendor/fileutils/lib/fileutils.rb:1692: warning: previous definition of METHODS was here
bundler: failed to load command: spring (/usr/local/bundle/ruby/2.6.0/bin/spring)
ArgumentError: Trying to register Bundler::GemfileError for status code 4 but Bundler::GemfileError is already registered
  /usr/local/lib/ruby/2.6.0/bundler/errors.rb:9:in `status_code'
  /usr/local/lib/ruby/2.6.0/bundler/errors.rb:20:in `<class:GemfileError>'
  /usr/local/lib/ruby/2.6.0/bundler/errors.rb:20:in `<module:Bundler>'
  /usr/local/lib/ruby/2.6.0/bundler/errors.rb:3:in `<top (required)>'
  /usr/local/lib/ruby/2.6.0/bundler.rb:10:in `require'
  /usr/local/lib/ruby/2.6.0/bundler.rb:10:in `<top (required)>'
  /usr/local/bundle/ruby/2.6.0/gems/spring-2.1.0/lib/spring/client/run.rb:3:in `require'
  /usr/local/bundle/ruby/2.6.0/gems/spring-2.1.0/lib/spring/client/run.rb:3:in `<top (required)>'
  /usr/local/bundle/ruby/2.6.0/gems/spring-2.1.0/lib/spring/client.rb:5:in `require'
  /usr/local/bundle/ruby/2.6.0/gems/spring-2.1.0/lib/spring/client.rb:5:in `<top (required)>'
  /usr/local/bundle/ruby/2.6.0/gems/spring-2.1.0/bin/spring:48:in `require'
  /usr/local/bundle/ruby/2.6.0/gems/spring-2.1.0/bin/spring:48:in `<top (required)>'
  /usr/local/bundle/ruby/2.6.0/bin/spring:23:in `load'
  /usr/local/bundle/ruby/2.6.0/bin/spring:23:in `<top (required)>'
       rails  webpacker:install
Yarn not installed. Please download and install Yarn from https://yarnpkg.com/lang/en/docs/install/
The command '/bin/sh -c rails new app' returned a non-zero code: 1

我尝试通过将以下两行添加到两个 Dockerfile 的顶部来安装 yarn ，但它仍然无法工作，它有相同的错误。

FROM node:6.7.0
RUN npm install -g yarn

Answer 1

用这个更新你的docker文件，这将安装最新版本的nodejs和yarn

RUN curl https://deb.nodesource.com/setup_12.x | bash
RUN curl https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
RUN echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list

RUN apt-get update && apt-get install -y nodejs yarn