Could not find mysql2-0.5.3 in any of the sources Run `bundle install` to install missing gems.

Could not find mysql2-0.5.3 in any of the sources
Run `bundle install` to install missing gems.

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.6.3'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.4', '>= 5.2.4.3'
# # Use sqlite3 as the database for Active Record
# gem 'sqlite3', '~> 1.3.6'
# gem 'mysql2', '~>0.5.3'
# 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'
  gem 'rubocop-airbnb'
end

group :test do
  gem 'capybara', '>= 2.15'
  gem 'rspec-rails'
  gem "factory_bot_rails"
  gem 'faker'
end

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

gem 'devise'

gem "refile", require: "refile/rails", github: 'manfe/refile'
gem "refile-mini_magick"

gem 'bootstrap', '~> 4.5'
gem 'bootstrap-sass', '~> 3.3.6'
gem 'jquery-rails'
gem 'font-awesome-sass', '~> 5.13'

gem 'kaminari'
gem 'kaminari-bootstrap', '~> 3.0.1'

gem 'dotenv-rails'
group :production do
  gem 'mysql2'
end

gem 'carrierwave'
gem 'fog-aws'

gem 'rakuten_web_service'

FROM ruby:2.6.3　

# 必要なパッケージのインストール。node.jsについては当初の記述だとエラーが出たため、修正。
RUN curl -sL https://deb.nodesource.com/setup_10.x | bash - && apt-get update && apt-get install -y nodejs --no-install-recommends && rm -rf /var/lib/apt/lists/*
RUN apt-get update && apt-get install -y mariadb-client --no-install-recommends && rm -rf /var/lib/apt/lists/*

# 作業ディレクトリの作成、設定
RUN mkdir /workdir
WORKDIR /workdir

# ホスト側（ローカル）のGemfileを上記で作成した/workdirに追加する
ADD Gemfile /workdir/Gemfile
ADD Gemfile.lock /workdir/Gemfile.lock

# Gemfileのbundle install　
# ENVなしで実行したところエラーが出た。BUNDLER_VERSIONを指定することで回避。
ENV BUNDLER_VERSION 2.1.4
RUN gem install bundler
RUN bundle install

# ホスト側（ローカル）の全てのディレクトリをDocekrコンテナの/workdir配下に追加。
ADD . /workdir

# docker-composeのバージョンを指定します。今回は'3'を使用。
version: "3"

# 起動するコンテナの定義を行います。このファイルではdb, db-test , webの三つを定義しています。
services:
  db:
    image: mysql:8.0
    command: --default-authentication-plugin=mysql_native_password　# デフォルトの認証形式をmysql_native_passwordに変更。MySQL5.0系なら不要。
    environment:
      MYSQL_ROOT_PASSWORD: password
      MYSQL_DATABASE: appname_development
      MYSQL_USER: root #任意のユーザー
      MYSQL_PASSWORD: password
      TZ: Asia/Tokyo
    volumes:
      - ./mysql/mysql_data:/var/lib/mysql
      - ./logs:/var/log/mysql
      - ./mysql/my.cnf:/etc/mysql/conf.d/my.cnf
    ports:
      - "4306:3306"

  db-test:
    image: mysql:8.0
    command: --default-authentication-plugin=mysql_native_password
    environment:
      MYSQL_ROOT_PASSWORD: password
      MYSQL_DATABASE: appname_test
      MYSQL_USER: root
      MYSQL_PASSWORD: password
      TZ: Asia/Tokyo
    volumes:
      - ./mysql/my.cnf:/etc/mysql/conf.d/my.cnf
    tmpfs:
      - /var/lib/mysql
      - /var/log/mysql

  web:
    build:
      context: .
      dockerfile: Dockerfile
    command: /bin/sh -c "rm -f /workdir/tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
    tty: true
    stdin_open: true
    depends_on:
      - db
    ports:
      - "3000:3000"
    volumes:
      - .:/workdir

default: &default
  adapter: mysql2
  encoding: utf8
  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>

development:
  <<: *default
  database: appname_development
  username: root
  password: password
  host: db
  socket: /tmp/mysql.sock

test:
  <<: *default
  database: appname_test
  host: db-test
  username: root
  password: password
  socket: /tmp/mysql.sock

production:
  <<: *default
  database: <%= ENV['DB_NAME'] %>
  username: <%= ENV['DB_USERNAME'] %>
  password: <%= ENV['DB_PASSWORD'] %>
  host: <%= ENV['DB_HOSTNAME'] %>