当 BUNDLE_PATH 随 Docker 更改时，捆绑程序找不到已安装的 gem [英] Installed gems not found by bundler when BUNDLE_PATH changed with Docker

问题描述

我正在使用 docker 开发 Rails 应用程序.docker 文件如下所示:

FROM ruby​​:1.9.3运行 apt-get update -qq &&apt-get install -y build-essential libpq-dev vimENV APP_HOME/next-reg运行 mkdir $APP_HOME工作目录 $APP_HOMEENV BUNDLE_PATH/box添加 .$APP_HOME运行 gem install gem1.gem gem2.gem复制 Gemfile Gemfile复制 Gemfile.lock Gemfile.lock运行捆绑安装

如您所见，我更改了 BUNDLE_PATH，这是因为 一篇文章展示了我们如何保持 gem 下载.因此，当 docker 缓存变热时，它会重新捆绑并占用 FOREVER.

当我 docker build 成功安装 gems 时，它无法在捆绑包中找到它们.有人可以帮我处理持久化 gem、安装我自己的 gem 并让它工作吗?

在我更改 BUNDLE_PATH 之前，构建工作正常，它只是经常重新捆绑而不更改 gem 文件(因为，我猜 docker 图像缓存变热了).

我的 docker-compose 是这样的:

数据库:图片:postgres卷:- ~/.docker-voumes/postgres/data:/var/lib/postgresql/data# 这是为了保存和持久化 ruby​​ gems，在 web 和 web 的 dockerfile 中引用.宝石文件:图片:忙箱卷:-/盒子网络:建造: .命令:bundle exec rails s -p 3000 -b '0.0.0.0'卷:- .:/下一个注册卷_来自:- gem_files端口:- 3000:3000"- 8000:8000"链接:- D b环境文件:- .myenv.env

解决方案

我认为你的代码中缺少GEM_HOME/GEM_PATH.

GEM_HOME/GEM_PATH 将被 gem install xxx 用于在特定文件夹中安装 gem.BUNDLE_PATH 将被 bundle install 用于在特定文件夹中安装 gems，但 gem install xx 不使用

要拥有一个工作系统，你应该这样做:

FROM ruby​​:1.9.3运行 apt-get update -qq &&apt-get install -y build-essential libpq-dev vimENV APP_HOME/next-reg运行 mkdir $APP_HOME工作目录 $APP_HOMEENV BUNDLE_PATH/boxENV GEM_PATH/boxENV GEM_HOME/box添加 .$APP_HOME运行 gem 安装捆绑程序运行 gem install tzinfo -v 1.2.2复制 Gemfile Gemfile运行捆绑安装

有了这个 Gemfile:

来源 'https://rubygems.org'宝石'tzinfo'，'1.2.2'

Wich 将产生:

<上一页>步骤 11/13:运行 gem install tzinfo -v 1.2.2---> 运行在 8a87fa54fa19成功安装thread_safe-0.3.6成功安装tzinfo-1.2.2已安装 2 个宝石---> 3c91d59bde8a卸下中间容器 8a87fa54fa19步骤 13/13:运行捆绑安装---> 在 20f1e4ec93b1 中运行不要以 root 身份运行 Bundler.如果需要，Bundler 可以要求 sudo，并且以 root 身份安装您的捆绑软件将破坏所有非 root 用户的此应用程序这台机器上的用户.从 https://rubygems.org/获取 gem 元数据...从 https://rubygems.org/获取版本元数据.解决依赖关系...Rubygems 1.8.23.2 不是线程安全的，因此您的 gem 将一次安装一个.升级到 Rubygems 2.1.0 或更高版本以启用并行 gem 安装.安装 rake 12.0.0使用 thread_safe 0.3.6使用捆绑器 1.14.6使用 tzinfo 1.2.2捆绑完成！2 个 Gemfile 依赖项，现在安装了 4 个 gem.捆绑的 gem 安装在/box 中.

正如您在结果输出中看到的那样，bundle install 重新使用了 gem install

中的预加载 gem

I'm using docker to develop a rails application. The docker file looks like this:

FROM ruby:1.9.3

RUN apt-get update -qq && apt-get install -y build-essential libpq-dev vim

ENV APP_HOME /next-reg
RUN mkdir $APP_HOME
WORKDIR $APP_HOME

ENV BUNDLE_PATH /box

ADD . $APP_HOME

RUN gem install gem1.gem  gem2.gem

COPY Gemfile Gemfile
COPY Gemfile.lock Gemfile.lock

RUN  bundle install

As you can see I change the BUNDLE_PATH, this is because of an article showing how we can persist gem downloads. So that overtime when the docker cache gets warm, it re-bundles and takes FOREVER.

When I docker build it successfully installs the gems, then it fails to find them on bundle. Could someone give me a hand with persisting gems, installing my own gems, and getting it to work?

Before I changed the BUNDLE_PATH the build worked, it just re bundled frequently without changes to the gem file (because, I guess the docker image cache got warm).

My docker-compose is like this:

db:
  image: postgres
  volumes:
    - ~/.docker-voumes/postgres/data:/var/lib/postgresql/data
# This is to hold and persist ruby gems, referenced in web and in web's dockerfile.
gem_files:
  image: busybox
  volumes:
    - /box

web:
  build: .
  command: bundle exec rails s -p 3000 -b '0.0.0.0'
  volumes:
    - .:/next-reg
  volumes_from: 
    - gem_files
  ports:
    - "3000:3000"
    - "8000:8000"
  links:
    - db
  env_file:
    - .myenv.env

解决方案

I think that there is a lack of GEM_HOME/GEM_PATH in your code.

GEM_HOME/GEM_PATH will be used by gem install xxx to install gems in a specific folder. BUNDLE_PATH will be used by bundle install to install gems in a specific folder but not by gem install xx

To have a working system you should do :

FROM ruby:1.9.3

RUN apt-get update -qq && apt-get install -y build-essential libpq-dev vim
ENV APP_HOME /next-reg
RUN mkdir $APP_HOME
WORKDIR $APP_HOME

ENV BUNDLE_PATH /box
ENV GEM_PATH /box
ENV GEM_HOME /box

ADD . $APP_HOME

RUN gem install bundler
RUN gem install tzinfo -v 1.2.2

COPY Gemfile Gemfile

RUN  bundle install

With this Gemfile :

source 'https://rubygems.org'

gem 'tzinfo', '1.2.2'

Wich will produce :

Step 11/13 : RUN gem install tzinfo -v 1.2.2
 ---> Running in 8a87fa54fa19
Successfully installed thread_safe-0.3.6
Successfully installed tzinfo-1.2.2
2 gems installed
 ---> 3c91d59bde8a
Removing intermediate container 8a87fa54fa19

Step 13/13 : RUN bundle install
 ---> Running in 20f1e4ec93b1
Don't run Bundler as root. Bundler can ask for sudo if it is needed, and
installing your bundle as root will break this application for all non-root
users on this machine.
Fetching gem metadata from https://rubygems.org/...
Fetching version metadata from https://rubygems.org/.
Resolving dependencies...
Rubygems 1.8.23.2 is not threadsafe, so your gems will be installed one at a time. Upgrade to Rubygems 2.1.0 or higher to enable parallel gem installation.
Installing rake 12.0.0
Using thread_safe 0.3.6
Using bundler 1.14.6
Using tzinfo 1.2.2
Bundle complete! 2 Gemfile dependencies, 4 gems now installed.
Bundled gems are installed into /box.

As you can see in the result output, the bundle install re-use the preloaded gems from gem install

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