ソフトウェア/docker/Railsを動かす のバックアップソース(No.3)

更新

[[公開メモ]]

* 参考にしたページ [#k6629f77]

https://qiita.com/okamos/items/8e9b258e3d610bdc2ed9

* library/ruby イメージ の雰囲気を確かめる [#n6f054ca]

サイズは 55.5MB だった。

 LANG:console
 $ docker run --rm -it ruby:alpine         # 何も指定しないと irb が立ち上がる
  irb(main):001:0>^D
 $ docker run --rm -it ruby:alpine bash    # bash は入っていない
  docker: Error response from daemon: OCI runtime create failed: container_linux.go:348: starting container process caused "exec: \"bash\": executable file not found in $PATH": unknown.
 $ docker run --rm -it ruby:alpine sh      # sh は入ってる
 /# ls -l bin/sh                           # 正体は busybox
  lrwxrwxrwx    1 root     root            12 Jan  9 19:37 bin/sh -> /bin/busybox
 /# ruby --version
  ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux-musl]
 /# gem --version
  2.7.6
 /# bundle --version
  Bundler version 1.16.1
 /# gem install rails                      # 始めは gcc 等が入っていないのでコケる
  ...
  Fetching: nokogiri-1.8.2.gem (100%)
  Building native extensions. This could take a while...
  ERROR:  Error installing rails:
          ERROR: Failed to build gem native extension.
  ...
 /# apk add -U --no-cache bash git alpine-sdk nodejs tzdata  # いろいろ入れる
 /# gem install rails                      # これで入った
  ...
  Successfully installed rails-5.2.0
  30 gems installed
 /# rails new myapp
  ...
  Installing sqlite3 1.3.13 with native extensions
  Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
  ...
 /# apk add sqlite-dev
 /# rails new myapp                        # うまく行った
 /# cd myapp
 /myapp# rails s &                         # サーバーを起動
  => Booting Puma
  => Rails 5.2.0 application starting in development
  => Run `rails server -h` for more startup options
  Puma starting in single mode...
  * Version 3.11.4 (ruby 2.5.1-p57), codename: Love Song
  * Min threads: 5, max threads: 5
  * Environment: development
  * Listening on tcp://0.0.0.0:3000
  Use Ctrl-C to stop
 /myapp# wget -O- localhost:3000 | head -4 # 正しく読める
  Connecting to localhost:3000 (127.0.0.1:3000)
  Started GET "/" for 127.0.0.1 at 2018-05-09 20:02:41 +0000
  Processing by Rails::WelcomeController#index as HTML
    Rendering /usr/local/bundle/gems/railties-5.2.0/lib/rails/templates/rails/welcome/index.html.erb
    Rendered /usr/local/bundle/gems/railties-5.2.0/lib/rails/templates/rails/welcome/index.html.erb (3.0ms)
  Completed 200 OK in 6ms (Views: 4.5ms | ActiveRecord: 0.0ms)
  
  <!DOCTYPE html>
  <html>
  <head>
    <title>Ruby on Rails</title>
 /myapp# cat Gemfile                       # 標準の Gemfile
  source 'https://rubygems.org'
  git_source(:github) { |repo| "https://github.com/#{repo}.git" }
  
  ruby '2.5.1'
  
  # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
  gem 'rails', '~> 5.2.0'
  # Use sqlite3 as the database for Active Record
  gem 'sqlite3'
  # Use Puma as the app server
  gem 'puma', '~> 3.11'
  # Use SCSS for stylesheets
  gem 'sass-rails', '~> 5.0'
  # Use Uglifier as compressor for JavaScript assets
  gem 'uglifier', '>= 1.3.0'
  # See https://github.com/rails/execjs#readme for more supported runtimes
  # gem 'mini_racer', platforms: :ruby
  
  # Use CoffeeScript for .coffee assets and views
  gem 'coffee-rails', '~> 4.2'
  # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
  gem 'turbolinks', '~> 5'
  # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
  gem 'jbuilder', '~> 2.5'
  # Use Redis adapter to run Action Cable in production
  # gem 'redis', '~> 4.0'
  # Use ActiveModel has_secure_password
  # gem 'bcrypt', '~> 3.1.7'
  
  # Use ActiveStorage variant
  # gem 'mini_magick', '~> 4.8'
  
  # Use Capistrano for deployment
  # gem 'capistrano-rails', group: :development
  
  # Reduces boot times through caching; required in config/boot.rb
  gem 'bootsnap', '>= 1.1.0', require: false
  
  group :development, :test do
    # Call 'byebug' anywhere in the code to stop execution and get a debugger console
    gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
  end
  
  group :development do
    # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
    gem 'web-console', '>= 3.3.0'
    gem 'listen', '>= 3.0.5', '< 3.2'
    # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
    gem 'spring'
    gem 'spring-watcher-listen', '~> 2.0.0'
  end
  
  group :test do
    # Adds support for Capybara system testing and selenium driver
    gem 'capybara', '>= 2.15', '< 4.0'
    gem 'selenium-webdriver'
    # Easy installation and use of chromedriver to run system tests with Chrome
    gem 'chromedriver-helper'
  end
  
  # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
  gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

* Dockerfile の作りかけ [#nf20b46f]

 FROM ruby:alpine
 RUN \
     # いろいろ入れる
     apk add -U --no-cache bash git alpine-sdk nodejs tzdata  && \
     # bundler 入れる
     gem install bundler && \
     #
     cd 


Gemfile
 LANG:ruby
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby '2.5.1'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 5.2.0'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3'
 # Use Puma as the app server
 gem 'puma', '~> 3.11'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 5.0'
 # Use Uglifier as compressor for JavaScript assets
 gem 'uglifier', '>= 1.3.0'
 # See https://github.com/rails/execjs#readme for more supported runtimes
 gem 'mini_racer', platforms: :ruby
 
 # Use CoffeeScript for .coffee assets and views
 gem 'coffee-rails', '~> 4.2'
 # Turbolinks makes navigating your web application faster. Read more: https://github.com/turbolinks/turbolinks
 ## gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.5'
 # Use Redis adapter to run Action Cable in production
 # gem 'redis', '~> 4.0'
 # Use ActiveModel has_secure_password
 gem 'bcrypt', '~> 3.1.7'
 
 # Use ActiveStorage variant
 # gem 'mini_magick', '~> 4.8'
 
 # Use Capistrano for deployment
 # gem 'capistrano-rails', group: :development
 
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.1.0', require: false
 
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]
 end
 
 group :development do
   # Access an interactive console on exception pages or by calling 'console' anywhere in the code.
   gem 'web-console', '>= 3.3.0'
   gem 'listen', '>= 3.0.5', '< 3.2'
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'
   gem 'spring-watcher-listen', '~> 2.0.0'
 end
 
 group :test do
   # Adds support for Capybara system testing and selenium driver
   gem 'capybara', '>= 2.15', '< 4.0'
   gem 'selenium-webdriver'
   # Easy installation and use of chromedriver to run system tests with Chrome
   gem 'chromedriver-helper'
 
   gem 'rspec-rails'
   gem 'rails-controller-testing'
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 # gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 # riot support
 gem 'riot_js-rails', github: 'bjarosze/riot_js-rails', ref: 'f6328dbabcdf69400e1cea70485973ae1c926b94'
 gem 'slim-rails'
 
 # frontend libraries
 gem 'jquery-rails'
 gem 'jquery-validation-rails'
 gem 'materialize-sass'
 
 # easy way to check emails sent by rails app
 group :development do
   gem "letter_opener"
   gem "letter_opener_web"
 end

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