railsでのgem依存関係でのエラー

Question

rails (5.0.1) ruby(2.4.5)
docker(2.3.0.3)

でのエラーです。
以下のエラーがでたため、理由で、railsを5.0.1に変え、もう一度
docker-compose buildにてイメージを作成しようとしたところ、下記エラーがでました。
(Dockerfileにて、RUN bundle installの記載をして、buildするとinstallするようになっています。)

e-s-mba:rails_udemy_docker_third eishunsudo$ docker-compose build
Stopping rails_udemy_docker_third_db_1 ... done
e-s-mba:rails_udemy_docker_third eishunsudo$ docker-compose build
db uses an image, skipping
Building web
Step 1/8 : FROM ruby:2.4.5
 ---> a14928bdfa34
Step 2/8 : RUN apt-get update -qq && apt-get install -y build-essential nodejs
 ---> Using cache
 ---> eebecb17239e
Step 3/8 : RUN mkdir /app
 ---> Using cache
 ---> 848a33a5584c
Step 4/8 : WORKDIR /app
 ---> Using cache
 ---> 453cb1f380bf
Step 5/8 : COPY Gemfile /app/Gemfile
 ---> Using cache
 ---> 66711a675603
Step 6/8 : COPY Gemfile.lock /app/Gemfile.lock
 ---> Using cache
 ---> 55773a304dc1
Step 7/8 : RUN bundle install
 ---> Running in f0d0c15936d7
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...
Bundler could not find compatible versions for gem "actionpack":
  In snapshot (Gemfile.lock):
    actionpack (= 5.0.0.1)

  In Gemfile:
    rails (= 5.0.1) was resolved to 5.0.1, which depends on
      actionpack (= 5.0.1)

    sass-rails (~> 5.0) was resolved to 5.0.7, which depends on
      railties (>= 4.0.0, < 6) was resolved to 5.0.0.1, which depends on
        actionpack (= 5.0.0.1)

Running `bundle update` will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.
ERROR: Service 'web' failed to build: The command '/bin/sh -c bundle install' returned a non-zero code: 6

https://qiita.com/kents1002/items/b69eb8b82824a2622c9c
上記の記事にあるように、actionpack関係でコンフリクトを起こしているようなのですが、
gemfile.lockを書き換えたらよいのかがわかりません。
ご教示いただけたら幸いです。

GEM
  remote: https://rubygems.org/
  specs:
    actioncable (5.0.0.1)
      actionpack (= 5.0.0.1)
      nio4r (~> 1.2)
      websocket-driver (~> 0.6.1)
    actionmailer (5.0.0.1)
      actionpack (= 5.0.0.1)
      actionview (= 5.0.0.1)
      activejob (= 5.0.0.1)
      mail (~> 2.5, >= 2.5.4)
      rails-dom-testing (~> 2.0)
    actionpack (5.0.0.1)
      actionview (= 5.0.0.1)
      activesupport (= 5.0.0.1)
      rack (~> 2.0)
      rack-test (~> 0.6.3)
      rails-dom-testing (~> 2.0)
      rails-html-sanitizer (~> 1.0, >= 1.0.2)
    actionview (5.0.0.1)
      activesupport (= 5.0.0.1)
      builder (~> 3.1)
      erubis (~> 2.7.0)
      rails-dom-testing (~> 2.0)
      rails-html-sanitizer (~> 1.0, >= 1.0.2)
    activejob (5.0.0.1)
      activesupport (= 5.0.0.1)
      globalid (>= 0.3.6)
    activemodel (5.0.0.1)
      activesupport (= 5.0.0.1)
    activerecord (5.0.0.1)
      activemodel (= 5.0.0.1)
      activesupport (= 5.0.0.1)
      arel (~> 7.0)
    activesupport (5.0.0.1)
      concurrent-ruby (~> 1.0, >= 1.0.2)
      i18n (~> 0.7)
      minitest (~> 5.1)
      tzinfo (~> 1.1)
    arel (7.1.4)
    autoprefixer-rails (9.8.6)
      execjs
    bindex (0.8.1)
    bootstrap (4.0.0)
      autoprefixer-rails (>= 6.0.3)
      popper_js (>= 1.12.9, < 2)
      sass (>= 3.5.2)
    builder (3.2.4)
    byebug (11.0.1)
    coffee-rails (4.2.2)
      coffee-script (>= 2.2.0)
      railties (>= 4.0.0)
    coffee-script (2.4.1)
      coffee-script-source
      execjs
    coffee-script-source (1.12.2)
    concurrent-ruby (1.1.7)
    crass (1.0.6)
    erubis (2.7.0)
    execjs (2.7.0)
    ffi (1.13.1)
    globalid (0.4.2)
      activesupport (>= 4.2.0)
    i18n (0.9.5)
      concurrent-ruby (~> 1.0)
    jbuilder (2.10.0)
      activesupport (>= 5.0.0)
    jquery-rails (4.4.0)
      rails-dom-testing (>= 1, < 3)
      railties (>= 4.2.0)
      thor (>= 0.14, < 2.0)
    libv8 (8.4.255.0-x86_64-linux)
    listen (3.0.8)
      rb-fsevent (~> 0.9, >= 0.9.4)
      rb-inotify (~> 0.9, >= 0.9.7)
    loofah (2.6.0)
      crass (~> 1.0.2)
      nokogiri (>= 1.5.9)
    mail (2.7.1)
      mini_mime (>= 0.1.1)
    method_source (1.0.0)
    mini_mime (1.0.2)
    mini_portile2 (2.4.0)
    mini_racer (0.3.1)
      libv8 (~> 8.4.255)
    minitest (5.14.1)
    mysql2 (0.4.10)
    nio4r (1.2.1)
    nokogiri (1.10.10)
      mini_portile2 (~> 2.4.0)
    popper_js (1.16.0)
    puma (3.12.6)
    rack (2.2.3)
    rack-test (0.6.3)
      rack (>= 1.0)
    rails (5.0.0.1)
      actioncable (= 5.0.0.1)
      actionmailer (= 5.0.0.1)
      actionpack (= 5.0.0.1)
      actionview (= 5.0.0.1)
      activejob (= 5.0.0.1)
      activemodel (= 5.0.0.1)
      activerecord (= 5.0.0.1)
      activesupport (= 5.0.0.1)
      bundler (>= 1.3.0, < 2.0)
      railties (= 5.0.0.1)
      sprockets-rails (>= 2.0.0)
    rails-dom-testing (2.0.3)
      activesupport (>= 4.2.0)
      nokogiri (>= 1.6)
    rails-html-sanitizer (1.3.0)
      loofah (~> 2.3)
    railties (5.0.0.1)
      actionpack (= 5.0.0.1)
      activesupport (= 5.0.0.1)
      method_source
      rake (>= 0.8.7)
      thor (>= 0.18.1, < 2.0)
    rake (13.0.1)
    rb-fsevent (0.10.4)
    rb-inotify (0.10.1)
      ffi (~> 1.0)
    sass (3.7.4)
      sass-listen (~> 4.0.0)
    sass-listen (4.0.0)
      rb-fsevent (~> 0.9, >= 0.9.4)
      rb-inotify (~> 0.9, >= 0.9.7)
    sass-rails (5.0.7)
      railties (>= 4.0.0, < 6)
      sass (~> 3.1)
      sprockets (>= 2.8, < 4.0)
      sprockets-rails (>= 2.0, < 4.0)
      tilt (>= 1.1, < 3)
    spring (2.0.2)
      activesupport (>= 4.2)
    spring-watcher-listen (2.0.1)
      listen (>= 2.7, < 4.0)
      spring (>= 1.2, < 3.0)
    sprockets (3.7.2)
      concurrent-ruby (~> 1.0)
      rack (> 1, < 3)
    sprockets-rails (3.2.1)
      actionpack (>= 4.0)
      activesupport (>= 4.0)
      sprockets (>= 3.0.0)
    thor (1.0.1)
    thread_safe (0.3.6)
    tilt (2.0.10)
    turbolinks (5.2.1)
      turbolinks-source (~> 5.2)
    turbolinks-source (5.2.0)
    tzinfo (1.2.7)
      thread_safe (~> 0.1)
    uglifier (4.2.0)
      execjs (>= 0.3.0, < 3)
    web-console (3.7.0)
      actionview (>= 5.0)
      activemodel (>= 5.0)
      bindex (>= 0.4.0)
      railties (>= 5.0)
    websocket-driver (0.6.5)
      websocket-extensions (>= 0.1.0)
    websocket-extensions (0.1.5)

PLATFORMS
  ruby

DEPENDENCIES
  bootstrap (~> 4.0.0)
  byebug
  coffee-rails (~> 4.2)
  jbuilder (~> 2.5)
  jquery-rails
  listen (~> 3.0.5)
  mini_racer
  mysql2 (>= 0.3.18, < 0.5)
  puma (~> 3.0)
  rails (~> 5.0.0, >= 5.0.0.1)
  sass-rails (~> 5.0)
  spring
  spring-watcher-listen (~> 2.0.0)
  turbolinks (~> 5)
  tzinfo-data
  uglifier (>= 1.3.0)
  web-console

BUNDLED WITH
   1.16.1

以下Gemfile

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.0.0', '>= 5.0.0.1'
# Use mysql as the database for Active Record
gem 'mysql2', '>= 0.3.18', '< 0.5'
# Use Puma as the app server
gem 'puma', '~> 3.0'
# Use SCSS for stylesheets
gem 'sass-rails', '~> 5.0'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .coffee assets and views
gem 'coffee-rails', '~> 4.2'
# See https://github.com/rails/execjs#readme for more supported runtimes
# gem 'therubyracer', platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# 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', '~> 3.0'
# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development
gem 'bootstrap', '~> 4.0.0'
gem 'mini_racer'

group :development, :test do
  # Call 'byebug' anywhere in the code to stop execution and get a debugger console
  gem 'byebug', platform: :mri
end

group :development do
  # Access an IRB console on exception pages or by using <%= console %> anywhere in the code.
  gem 'web-console'
  gem 'listen', '~> 3.0.5'
  # 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

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]

Comments

[gouf]

docker-compose build : Step 7 の「RUN bundle install」を「RUN bundle update」に書き換えた場合、何か変化は見られますか?

[shutainer]

ありがとうございます。
実はさっき自己解決しました。
gem 'rails', '5.0.1'
gem 'sass-rails'
とsass-tail のver指定を外し、
docker-compose exec web bundle exec update
として、
docker-compose build
その後
docker-compose up -d
としたらなぜかできました。

理解できていません。

Answer 1

gem 'rails', '5.0.1'
gem 'sass-rails'
とsass-tail のver指定を外し、
docker-compose exec web bundle exec update
として、
docker-compose build
その後
docker-compose up -d
としたらなぜかできました。