Docker ComposeでRails環境作成 mkdir -p railsapp && cd railsapp && curl -L http://bit.ly/rails6-docker | sh

docker_rails.sh

#!/usr/bin/env bash

rails_version="${RAILS_VERSION:-7}"
ruby_version="${RUBY_VERSION:-3.0}"
node_version="${NODE_VERSION:-16}"

docker run --rm -v `pwd`:/usr/src/app ruby:$ruby_version sh -c "gem install rails --version $rails_version && rails new /usr/src/app --database mysql ${RAILS_OPTIONS} --git --force --version $rails_version"

cat << __EOT__ > Dockerfile
FROM ruby:$ruby_version
ENV LANG C.UTF-8

RUN apt-get update && \\
    curl -sL https://deb.nodesource.com/setup_$node_version.x | bash - && \\
    apt-get install -y nodejs gcc g++ make mariadb-client --no-install-recommends && \\
    npm install --global yarn && \\
    rm -rf /var/lib/apt/lists/*
WORKDIR /usr/src/app

COPY Gemfile Gemfile.lock /usr/src/app/
RUN bundle install

# COPY package.json yarn.lock /usr/src/app/
# RUN yarn install

COPY . /usr/src/app

EXPOSE 3000
CMD ["./bin/rails", "server", "-b", "0.0.0.0"]
__EOT__

cat << __EOT__ > docker-compose.yml
version: "3"

services:
  rails:
    build: .
    command:
      ["bash", "-c", "rm -f tmp/pids/server.pid; ./bin/rails server -b 0.0.0.0"]
    mem_limit: 384m
    environment:
      DISABLE_SPRING: "1"
    ports:
      - "3000:3000"
    volumes:
      - ".:/usr/src/app"
      - "/usr/src/app/node_modules"
    links:
      - "mysql"

  mysql:
    image: mysql/mysql-server:8.0.20
    environment:
      MYSQL_ROOT_PASSWORD: "passwd"
      MYSQL_ROOT_HOST: '%' # https://zenn.dev/ryo_kawamata/articles/mysql-connect-error
__EOT__

sed -i "" -e  's/password:$/password: "passwd"/;s/localhost/mysql/' config/database.yml
sed -i "" -e  "s|^end|  config.web_console.whitelisted_ips = %w( 0.0.0.0/0 ::/0 )"\\$'\n'"end|" config/environments/development.rb
touch Gemfile.lock

echo ">>>> Build docker image"
docker-compose build

echo ">>>> Create DBs"
docker-compose run --rm rails rails db:create