Rails api Docker容器在启动其他服务时启动失败（无法加载命令：rails）

Question

我有几个通过docker-compose文件一起运行的docker服务。

version: '3'
services:
  redis-server:
    image: redis
  scrapper:
    image: davidgeismar/artifacts-scrapper:without-db
    command: 'ruby ./scrap_sources.rb'
    environment:
      - REDIS_URL=redis://redis-server:6379/0
      - ARTIFACTS_ENV=docker_development
      - DATA_API_BASE=http://data_api:3000
    volumes:
      - .:/usr/src/artifacts_scrapper
    depends_on:
      - data_api
      - redis-server
  data_api:
    image: davidgeismar/artifacts_data_api:latest
    command: bundle exec rails s -p 3000 -b '0.0.0.0'
    volumes:
      - .:/artifacts_data_api
    environment:
      - RAILS_ENV=docker_development
      - SECRET_KEY_BASE=docker_development_secret
  sidekiq:
    build: .
    command: 'bundle exec sidekiq -r ./artifacts_scrapper.rb 2>&1 | tee ./log/sidekiq.log'
    volumes:
      - ./:/usr/src/artifacts_scrapper
    environment:
      - REDIS_URL=redis://redis-server:6379/0
      - ARTIFACTS_ENV=docker_development
      - DATA_API_BASE=http://data_api:3000
    depends_on:
      - redis-server
      - data_api

问题出在data_api（rails api）服务，当我与它的docker文件一起单独运行它时，它可以正常工作：

FROM ruby:2.6.3
RUN apt-get update -qq && apt-get install -y nodejs postgresql-client
RUN mkdir /artifacts_data_api
WORKDIR /artifacts_data_api
COPY Gemfile /artifacts_data_api/Gemfile
COPY Gemfile.lock /artifacts_data_api/Gemfile.lock
RUN gem install bundler
RUN gem install rails
RUN bundle install
COPY . /artifacts_data_api

# Add a script to be executed every time the container starts.
COPY entrypoint.sh /usr/bin/
RUN chmod +x /usr/bin/entrypoint.sh
ENTRYPOINT ["/usr/bin/entrypoint.sh"]
EXPOSE 3000

# Start the main process.
CMD ["rails", "server", "-b", "0.0.0.0"]

但是，当我通过docker-compose文件与其他服务一起运行它时：docker-compose pull && docker-compose up --build

我明白了：

data_api_1      | bundler: failed to load command: rails (/usr/local/bundle/ruby/2.6.0/bin/rails)
data_api_1      | Bundler::GemNotFound: Could not find concurrent-ruby-1.1.5 in any of the sources
data_api_1      |   /usr/local/bundle/gems/bundler-2.1.4/lib/bundler/spec_set.rb:86:in `block in materialize'

我不知道该服务在单独启动时如何运行良好，而在通过docker-compose与其他服务一起运行时在启动时失败。

您可以在这里找到github项目：

https://github.com/davidgeismar/artifacts-scrapper/tree/removing-dbhttps://github.com/davidgeismar/artifacts_data_api

和docker hub：

https://hub.docker.com/repository/docker/davidgeismar/artifacts-scrapper

https://hub.docker.com/repository/docker/davidgeismar/artifacts_data_api

Answer 1

尝试使用此命令在dockerfile中启动映像

CMD bundle exec rails s -p 3000 -b '0.0.0.0'

并在data_api下的docker-compose.yml中删除此行

command: bundle exec rails s -p 3000 -b '0.0.0.0'