ソフトウェア/docker/Railsを動かす のバックアップ(No.3)

更新


公開メモ

参考にしたページ

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

library/ruby イメージ の雰囲気を確かめる

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

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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