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http://localhost:ポート番号を変更する方法

Posted at

hello rails 画面を好きなポート番号で接続する

スクリーンショット 2021-01-12 15.40.42.png

手順

ポート番号3000で接続してみる

docker-compose.yml
version: "3"

services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "3000:3000"
    tty: true
    stdin_open: true
    command: bash -c "bundle exec rails s -p 3000 -b '0.0.0.0'"
    depends_on:
      - db

  db:
    image: mysql:8.0.16
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    environment:
      MYSQL_HOST: 127.0.0.1
      MYSQL_DATABASE: app_development
      MYSQL_USERNAME: root
      MYSQL_ROOT_PASSWORD: root
    security_opt:
      - seccomp:unconfined
    ports:
      - "3306:3306"
Dockerfile
FROM ruby:2.6.5-stretch
ENV LANG C.UTF-8

ENV APP_ROOT /app
WORKDIR $APP_ROOT

RUN apt-get update && apt-get install -y --no-install-recommends \
    curl apt-transport-https wget && \
    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 && \
    curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
    apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    vim \
    mysql-client \
    yarn \
    nodejs && \
    gem install bundler && \
    rm -rf /var/lib/apt/lists/*


COPY Gemfile $APP_ROOT
COPY Gemfile.lock $APP_ROOT
COPY entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]
RUN bundle install

COPY . $APP_ROOT

EXPOSE 3000

起動する
docker-compose up --build
コンテナに入る
docker-compose exec app bash
Gemfileの更新
bundle install
新規プロジェクト作成(sqliteでなく、mysqlを選択)
rails new . -d mysql
コンテナを落とす
docker-compose down
database.ymlにdocker-composeのdbコンテナのpasswordを設定
docker-compose up

=> railsが3000ポートが起動する

ポート番号3001で接続する

docker-compose.yml
version: "3"

services:
  app:
    build:
      context: .
      dockerfile: Dockerfile
    ports:
      - "3001:3001"
    tty: true
    stdin_open: true
    command: bash -c "bundle exec rails s -p 3001 -b '0.0.0.0'"
    depends_on:
      - db

  db:
    image: mysql:8.0.16
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    environment:
      MYSQL_HOST: 127.0.0.1
      MYSQL_DATABASE: app_development
      MYSQL_USERNAME: root
      MYSQL_ROOT_PASSWORD: root
    security_opt:
      - seccomp:unconfined
    ports:
      - "3306:3306"
Dockerfile
FROM ruby:2.6.5-stretch
ENV LANG C.UTF-8

ENV APP_ROOT /app
WORKDIR $APP_ROOT

RUN apt-get update && apt-get install -y --no-install-recommends \
    curl apt-transport-https wget && \
    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 && \
    curl -sL https://deb.nodesource.com/setup_8.x | bash - && \
    apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    vim \
    mysql-client \
    yarn \
    nodejs && \
    gem install bundler && \
    rm -rf /var/lib/apt/lists/*


COPY Gemfile $APP_ROOT
COPY Gemfile.lock $APP_ROOT
COPY entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]
RUN bundle install

COPY . $APP_ROOT

EXPOSE 3001

手順

docker-compose.yml

  • rails起動コンテナのapp内、portsを3001:3001を指定。
  • 同じく、commandで解放済みの3001ポートをリッスンするよう指定。

Dockerfile

  • EXPOSEにて、3001ポートを解放するよう指定

http://localhost:3001
でrailsが起動する。

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