Ruby on rails Docker Compose和Rails:Bundler:：GemNotFound启动时。bundler没有看到正确的宝石吗？

我正试图按照说明使用Docker Compose设置Rails和Postgres应用程序，如文档中所述->

但是，在成功设置数据库后，当我尝试启动应用程序时，在运行

docker compose up

时遇到以下错误：

docker-compose up
Creating docker-and-cms_db_1 ... done
Creating docker-and-cms_web_1 ... done
Attaching to docker-and-cms_db_1, docker-and-cms_web_1
web_1  | bundler: failed to load command: rails (/usr/local/bundle/bin/rails)
web_1  | Bundler::GemNotFound: Could not find bindex-0.8.1 in any of the sources
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/spec_set.rb:91:in `block in materialize'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/spec_set.rb:85:in `map!'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/spec_set.rb:85:in `materialize'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/definition.rb:170:in `specs'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/definition.rb:237:in `specs_for'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/definition.rb:226:in `requested_specs'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/runtime.rb:108:in `block in definition_method'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/runtime.rb:20:in `setup'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler.rb:107:in `setup'
web_1  |   /usr/local/lib/ruby/2.6.0/bundler/setup.rb:20:in `<top (required)>'
web_1  |   /usr/local/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
web_1  |   /usr/local/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
docker-and-cms_web_1 exited with code 1

这是我的

entrypoind.sh

# From https://docs.docker.com/compose/rails/
FROM ruby:2.6.5

RUN apt-get update -qq && apt-get install -y nodejs postgresql-client
RUN mkdir /myapp
WORKDIR /myapp

COPY Gemfile /myapp/Gemfile
COPY Gemfile.lock /myapp/Gemfile.lock

RUN bundle install --path vendor/cache

COPY . /myapp

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

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

#!/bin/bash
set -e

# Remove a potentially pre-existing server.pid for Rails.
rm -f /myapp/tmp/pids/server.pid

# Then exec the container's main process (what's set as CMD in the Dockerfile).
exec "$@"

最后是我的

docker compose.yml

文件

version: '3'
services:
  db:
    image: postgres
    volumes:
      - ./tmp/db:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: password
  web:
    build: .
    command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
    volumes:
      - .:/myapp
    ports:
      - "3000:3000"
    depends_on:
      - db

这是我的

Gemfile

的开头（经过编辑，因为我认为只有前几行是相关的）：

---

谢谢你的帮助

在Docker容器中，Bundler正在错误的目录中查找gem，如您所说。当容器启动时，Bundler安装并找到Ruby 2.6.0，或者，将某些内容复制到容器中，使Bundler相信已安装Ruby 2.6.0

当您使用Docker image ruby:2.5.6时，上面的第二个选项更可能出现

如果查看Docker文件的第8-9行，您将看到在构建Docker映像时，Gemfile和Gemfile.lock从本地计算机复制到容器中

我认为这里可能发生的事情是，在本地机器上生成的Gemfile.lock是使用Ruby 2.6.0完成的

您的本地机器（不在容器中）的Ruby版本是什么？运行

ruby-v

查看

尝试在本地计算机上安装Ruby 2.6.5并运行

bundle install

，以更新Gemfile.lock

---

我在手机上，目前自己无法测试这些。但这是一个开始

谢谢你的帮助！我本地机器上的ruby版本是ruby 2.6.3p62。并不是说我以前在本地机器上使用rvm来管理我的Ruby版本。由于到目前为止它是一个空项目，我将尝试删除我的Gemfile.lock。注意，Gemfile.lock似乎是用ruby 2.6.5生成的（在这里复制文件的结尾）。RUBY版本RUBY 2.6.5p114与1.17.2I捆绑在一起，我编辑了这个问题，添加了来自容器的bundle env结果。看看这个（很旧）

source 'https://rubygems.org'
git_source(:github) { |repo| "https://github.com/#{repo}.git" }

ruby '2.6.5'

# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '~> 5.2.4', '>= 5.2.4.1'
# Use postgresql as the database for Active Record
gem 'pg', '>= 0.18', '< 2.0'
# (...)

root@588227887e16:/myapp# bundle env
## Environment


Bundler       1.17.2
  Platforms   ruby, x86_64-linux
Ruby          2.6.5p114 (2019-10-01 revision 67812) [x86_64-linux]
  Full Path   /usr/local/bin/ruby
  Config Dir  /usr/local/etc
RubyGems      3.0.3
  Gem Home    /usr/local/bundle
  Gem Path    /root/.gem/ruby/2.6.0:/usr/local/lib/ruby/gems/2.6.0:/usr/local/bundle
  User Path   /root/.gem/ruby/2.6.0
  Bin Dir     /usr/local/bundle/bin
Tools
  Git         2.20.1
  RVM         not installed
  rbenv       not installed
  chruby      not installed


## Bundler Build Metadata


Built At          2018-12-19
Git SHA           3fc4de72b
Released Version  false


## Bundler settings


path
  Set for your local app (/usr/local/bundle/config): "vendor/cache"
app_config
  Set via BUNDLE_APP_CONFIG: "/usr/local/bundle"
silence_root_warning
  Set via BUNDLE_SILENCE_ROOT_WARNING: true