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在Docker上修改Rails应用程序时,如何加载源代码更改?

docker ruby-on-rails

0

jpw · 技术社区 · 8 年前

使用Docker在开发机器上运行Rails应用程序时,如何强制使用一次代码更改?

我正在使用Docker测试/调整Rails应用程序(Helpy),但是当我修改Rails源代码时,任何更改都会被忽略。甚至更改dockker/run.sh或调整视图上的文本。

所以docker显然是在缓存所有东西,我如何告诉docker使用我编辑过的当前源代码?

我试过了

docker-compose down (then up)

或

docker-compose restart

或

docker-compose build

Dockerfile是

FROM ruby:2.4

ENV HELPY_VERSION=master \
    RAILS_ENV=production \
    HELPY_HOME=/helpy \
    HELPY_USER=helpyuser \
    HELPY_SLACK_INTEGRATION_ENABLED=true

RUN apt-get update \
  && apt-get upgrade -y \
  && apt-get install -y nodejs postgresql-client imagemagick --no-install-recommends \
  && rm -rf /var/lib/apt/lists/* \
  && useradd --no-create-home $HELPY_USER \
  && mkdir -p $HELPY_HOME \
  && chown -R $HELPY_USER:$HELPY_USER $HELPY_HOME /usr/local/lib/ruby /usr/local/bundle

WORKDIR $HELPY_HOME

USER $HELPY_USER

RUN git clone --branch $HELPY_VERSION --depth=1 https://github.com/helpyio/helpy.git .

# add the slack integration gem to the Gemfile if the HELPY_SLACK_INTEGRATION_ENABLED is true
# use `test` for sh compatibility, also use only one `=`. also for sh compatibility
RUN test "$HELPY_SLACK_INTEGRATION_ENABLED" = "true" && sed -i '128i\gem "helpy_slack", git: "https://github.com/helpyio/helpy_slack.git", branch: "master"' $HELPY_HOME/Gemfile

RUN bundle install

RUN touch /helpy/log/production.log && chmod 0664 /helpy/log/production.log

# Due to a weird issue with one of the gems, execute this permissions change:
RUN chmod +r /usr/local/bundle/gems/griddler-mandrill-1.1.3/lib/griddler/mandrill/adapter.rb

# manually create the /helpy/public/assets folder and give the helpy user rights to it
# this ensures that helpy can write precompiled assets to it
RUN mkdir -p $HELPY_HOME/public/assets && chown $HELPY_USER $HELPY_HOME/public/assets

VOLUME $HELPY_HOME/public

COPY docker/database.yml $HELPY_HOME/config/database.yml
COPY docker/run.sh $HELPY_HOME/run.sh

CMD ["./run.sh"]

docker-compose.yml是

version: '2'

services:
  frontend:
    image: webwurst/caddy
    volumes:
      - ./docker/Caddyfile:/etc/caddy/Caddyfile
      - ./certs:/etc/caddy/certs
    volumes_from:
      - helpy:ro
    ports:
      - "80:80"
      - "443:443"
    networks:
      - front
    restart: always
    depends_on:
      - helpy
  helpy:
    image: helpy/helpy
    restart: always
    networks:
      - front
      - back
    volumes:
      - rails-assets:/helpy/public
    env_file: docker/.env
    #environment:
    #  - DO_NOT_PREPARE=true
    depends_on:
      - postgres
  postgres:
    image: postgres:9.4
    restart: always
    networks:
      - back
    env_file: docker/.env
    volumes:
      - ./postgres:/var/lib/postgresql/data

volumes:
  rails-assets:
    driver: local

networks:
  front:
    driver: bridge
  back:
    driver: bridge

在docker-compose.yml中我更改了

  helpy:
    image: helpy/helpy

到

  helpy:
    build: .

希望停止使用预先构建的docker映像,并在开发机器上使用代码。但是,我对视图所做的任何更改(例如,将视图上的标题文本从“Admin Brand”更改为“My New Header”)都将被忽略。我试过了

docker-compose down
docker-compose up

类似地,我尝试了docker compose build或docker compose restart

所以Docker显然是在缓存源代码,而不是使用我编辑的源代码的“实时”版本。

我已经用了很多流浪者,但我对Docker很陌生,所以任何帮助修改Docker项目,允许当地发展变化将不胜感激。

1 回复 | 直到 8 年前

1

Jhonn Frazão 8 年前

如果您使用:

volumes:
  rails-assets:
    driver: local

告诉docker创建一个卷并将数据放入其中。

但如果要与容器实时同步共享本地代码,则需要执行以下操作:

helpy:
    image: helpy/helpy
    restart: always
    networks:
      - front
      - back
    volumes:
      - ./local/path/to/your/code:/helpy/public

现在,当您更改本地代码时,代码将同时在容器中更改。