带捆绑器的多级 docker 构建

Question

ARG     RUBY_VERSION=3.1.0
ARG     IMAGE_OS=slim-buster
FROM    ruby:${RUBY_VERSION}-${IMAGE_OS} as prod-gem-base
ENV     APP_ENVIRONMENT=production 
ENV     RACK_ENV=production
ARG     CI_ACCESS_TOKEN
WORKDIR /contract-service
RUN     apt-get update && apt-get install -qqy build-essential ca-certificates tzdata shared-mime-info git curl openssh-client libpq-dev && \
        rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
        gem install bundler:2.3.13 && \
        bundle config --global frozen 1 && \
        bundle config set without 'development test' && \
        mkdir -p -m 600 $HOME/.ssh && ssh-keyscan gitlab.xxx.de >> $HOME/.ssh/known_hosts && \
        if [ -n $CI_ACCESS_TOKEN ]; then git config --global url."https://gitlab-ci-token:${CI_ACCESS_TOKEN}@gitlab.xxx.de /".insteadOf git@gitlab.xxx.de: ; fi
COPY    Gemfile Gemfile.lock ./
RUN     --mount=type=ssh bundle install --jobs 20 --retry 5 && \
        bundle clean --force && \
        rm -rf /usr/local/bundle/cache/*.gem && \
        find /usr/local/bundle/gems/ -name "*.c" -delete && \
        find /usr/local/bundle/gems/ -name "*.o" -delete

ARG     RUBY_VERSION
ARG     IMAGE_OS
FROM    ruby:${RUBY_VERSION}-${IMAGE_OS} as prod-core-base
ENV     APP_ENVIRONMENT=production
ENV     RACK_ENV=production
WORKDIR /contract-service
RUN     mkdir -p /tmp/pids && apt-get update && apt-get install -qqy --no-install-recommends shared-mime-info openssh-client libpq-dev && \
COPY    --from=prod-gem-base /usr/local/bundle/ /usr/local/bundle/
COPY    . .
EXPOSE  3005
CMD     ["bundle", "exec", "puma", "--pidfile", "/tmp/pids/server.pid", "-b", "tcp://0.0.0.0", "-p", "3005"]

我不确定有多少 ruby 人在这里。 我正在创建一个多阶段构建来缓存宝石。 我正在构建一个生产映像，但是当容器运行时，捆绑器输出错误如下。

bundler: failed to load command: puma (/usr/local/bundle/bin/puma)
cntrct-contract.1.dfhae8xfhdip@stage-app01-ruh2    | /usr/local/bundle/gems/bundler-2.3.13/lib/bundler/definition.rb:486:in `materialize': Could not find rubocop-1.31.2, byebug-11.1.3, simplecov-0.21.2, simplecov-cobertura-2.1.0, webmock-3.13.0, cucumber-8.0.0, rspec-3.11.0, rspec-core-3.11.0, rspec_junit_formatter-0.5.1, rack-test-2.0.2, json-2.6.2, parallel-1.22.1, parser-3.1.2.0, rainbow-3.1.1, regexp_parser-2.5.0, rubocop-ast-1.19.1, ruby-progressbar-1.11.0, unicode-display_width-2.2.0, docile-1.4.0, simplecov-html-0.12.3, simplecov_json_formatter-0.1.4, crack-0.4.5, hashdiff-1.0.1, builder-3.2.4, cucumber-ci-environment-9.0.4, cucumber-core-11.0.0, cucumber-cucumber-expressions-15.2.0, cucumber-gherkin-23.0.1, cucumber-html-formatter-19.2.0, cucumber-messages-18.0.0, diff-lcs-1.5.0, multi_test-1.1.0, sys-uname-1.2.2, rspec-expectations-3.11.0, rspec-mocks-3.11.1, rspec-support-3.11.0, ast-2.4.2, cucumber-tag-expressions-4.1.0, ffi-1.15.5 in any of the sources (Bundler::GemNotFound)
cntrct-contract.1.dfhae8xfhdip@stage-app01-ruh2    |    from /usr/local/bundle/gems/bundler-2.3.13/lib/bundler/definition.rb:191:in `specs'
cntrct-contract.1.8tfk50ss339q@stage-app01-ruh2    |    from /usr/local/bundle/bin/bundle:25:in `<main>'
cntrct-contract.1.dfhae8xfhdip@stage-app01-ruh2    |    from /usr/local/bundle/gems/bundler-2.3.13/lib/bundler/definition.rb:239:in `specs_for'
cntrct-contract.1.dfhae8xfhdip@stage-app01-ruh2    |    from /usr/local/bundle/gems/bundler-2.3.13/lib/bundler/runtime.rb:18:in `setup'
cntrct-contract.1.dfhae8xfhdip@stage-app01-ruh2    |    from /usr/local/bundle/gems/bundler-2.3.13/lib/bundler.rb:151:in `setup'
cntrct-contract.1.dfhae8xfhdip@stage-app01-ruh2    |    from /usr/local/bundle/gems/bundler-2.3.13/lib/bundler/setup.rb:20:in `block in <top (required)>'

问题是捆绑器正在尝试加载不在最终图像中的与开发和测试相关的 gem。 有人能告诉我如何正确使用多级 docker 构建吗？