Rails6 x Docker x MySQL環境を一瞬で作るシェルスクリプト
Author: 水卜
Author: 水卜
Rails6.0環境をDockerで作る手順を真面目にやると1日が終わるのでシェルにした。
Docker, Docker-composeが入っていること
# ディレクトリを作成
$ mkdir my-rails-app
$ cd my-rails-app
# 以下に書いたシェルの内容をcreate-rails.shなどといったファイル名で保存して実行。
$ ./create-rails.sh
$ docker-compose up
#!/bin/bash
###########################################################################
# DockerでRailsアプリを新規作成し、開発できる状態にするシェルスクリプト
# Rails: 6.0
# Ruby: 2.6.5
# DB: Mysql 5.7.19
###########################################################################
# Dockerfile作成
cat << _EOT_ > ./Dockerfile
FROM ruby:2.6.5
RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
RUN apt-get update -qq && apt-get install -y nodejs yarn
RUN mkdir /myapp
WORKDIR /myapp
COPY Gemfile /myapp/Gemfile
COPY Gemfile.lock /myapp/Gemfile.lock
RUN bundle install
COPY . /myapp
EXPOSE 3000
# Start the main process.
CMD ["rails", "server", "-b", "0.0.0.0"]
_EOT_
# Gemfile, Gemfile.lock作成
cat << _EOT_ > ./Gemfile
source 'https://rubygems.org'
gem 'rails', '~>6'
_EOT_
touch Gemfile.lock
# docker-compose.yml作成
cat << _EOT_ > ./docker-compose.yml
version: '3'
services:
db:
image: mysql:5.7.19
environment:
- MYSQL_ROOT_PASSWORD=root
ports:
- "3306:3306"
volumes:
- ./tmp/db:/var/lib/mysql
web:
build: .
command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
volumes:
- .:/myapp
- bundle-data:/usr/local/bundle
ports:
- "3000:3000"
depends_on:
- db
volumes:
bundle-data:
_EOT_
docker-compose run web rails new . --force --no-deps --database=mysql --webpacker
docker-compose build
rm -rf ./config/database.yml
cat << _EOT_ > ./config/database.yml
default: &default
adapter: mysql2
encoding: utf8mb4
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
username: root
password: root
host: db
development:
<<: *default
database: myapp_development
test:
<<: *default
database: myapp_test
production:
<<: *default
database: myapp_production
username: myapp
password: <%= ENV['MYAPP_DATABASE_PASSWORD'] %>
_EOT_
docker-compose run web rails db:create