如何解决在 debian 中安装 rbenv 时找不到 gem 命令 Dockerfile构建尾部
我正在创建一个 Dockerfile 来运行 truffleruby。尝试安装 bundler 和 foreman 时出现错误。错误是 /bin/sh: 1: gem: not found
Dockerfile
FROM debian:buster-slim
# Install packages for building ruby
RUN apt update -y && apt install -y git curl libssl-dev libpq-dev libreadline-dev zlib1g-dev \
autoconf bison build-essential libyaml-dev \
libreadline-dev libncurses5-dev libffi-dev libgdbm-dev
RUN apt clean
# Install rbenv and ruby-build
RUN git clone https://github.com/sstephenson/rbenv.git /root/.rbenv
RUN git clone https://github.com/sstephenson/ruby-build.git /root/.rbenv/plugins/ruby-build
RUN /root/.rbenv/plugins/ruby-build/install.sh
ENV PATH /root/.rbenv/bin:$PATH
RUN echo 'eval "$(rbenv init -)"' >> /etc/profile.d/rbenv.sh # or /etc/profile
RUN echo 'eval "$(rbenv init -)"' >> .bashrc
RUN . ~/.bashrc
RUN rbenv install truffleruby-20.3.0
RUN rbenv global truffleruby-20.3.0
RUN rbenv rehash
ENV BUNDLER_VERSION=2.2.4 NODE_ENV=production RAILS_ENV=production RAILS_SERVE_STATIC_FILES=true RAILS_LOG_TO_STDOUT=true PORT=3000
ENV CONfigURE_OPTS --disable-install-doc
RUN apt-get install -y curl -sL https://deb.nodesource.com/setup_14.x | bash - && \
apt-get update && apt-get install -y nodejs && \
apt-get clean
RUN rbenv versions
RUN gem install bundler:2.2.4 foreman
RUN mkdir /app
workdir /app
copY Gemfile Gemfile.lock ./
RUN bundle config set --local deployment 'true'
RUN bundle config set --local without 'development test'
RUN bundle install
copY . .
EXPOSE 3000
CMD ["foreman","start"]
构建尾部
Removing intermediate container 1a445fde7fc0
---> 43c3d72b7eb6
Step 17/27 : RUN rbenv versions
---> Running in feb5bb9361cc
* truffleruby-20.3.0 (set by /root/.rbenv/version)
Removing intermediate container feb5bb9361cc
---> c7d1a5826af5
Step 18/27 : RUN gem install bundler:2.2.4 foreman
---> Running in 998461afc89c
/bin/sh: 1: gem: not found
The command '/bin/sh -c gem install bundler:2.2.4 foreman' returned a non-zero code: 127
解决方法
您通常不会在 Docker 中使用 rbenv
之类的版本管理器。这有几个原因。一个是图像通常只包含一个应用程序和它的单个运行时,所以在一个图像中永远不会有多个 Ruby,因此不需要切换。第二个是运行容器的最常见路径(包括 docker run
和 Dockerfile RUN
指令)不查看像 .bashrc
或 /etc/profile
这样的 shell 点文件,因此版本经理设置永远不会运行。
TruffleRuby 作为 standalone tar file 分发(以及其他方式),因此您可以将其安装在 Dockerfile 中。我会让 Dockerfile 看起来大致像:
FROM debian:buster-slim
# Install the specific dependency packages TruffleRuby recommends
# (build-essential is much larger but might actually be necessary)
RUN apt-get update \
&& DEBIAN_FRONTEND=noninteractive \
apt-get install --no-install-recommends --assume-yes \
curl \
gcc \
libssl-dev \
libz-dev \
make
# Download and unpack TruffleRuby
ARG TRUFFLERUBY_VERSION=20.3.0
ENV PATH /opt/truffleruby-$TRUFFLERUBY_VERSION-linux-amd64/bin:$PATH
RUN cd /opt \
&& curl -L https://github.com/oracle/truffleruby/releases/download/vm-$TRUFFLERUBY_VERSION/truffleruby-$TRUFFLERUBY_VERSION-linux-amd64.tar.gz | tar xz \
&& /opt/truffleruby-$TRUFFLERUBY_VERSION-linux-amd64/lib/truffle/post_install_hook.sh
# Now build and install your application
RUN gem install bundler:2.2.4
WORKDIR /app
COPY Gemfile Gemfile.lock ./
RUN bundle config set --local deployment 'true'
RUN bundle config set --local without 'development test'
RUN bundle install
COPY . .
ENTRYPOINT ["bundle","exec"]
EXPOSE 3000
CMD ["rails","start"]
您可以合理地将其拆分为两个单独的 Dockerfile。在“构建并安装您的应用程序”注释之前结束第一个,并使用 docker build -t myname/truffleruby:20.3.0 -f Dockerfile.truffleruby .
构建它。然后第二个可以以与标准 Docker Hub FROM myname/truffleruby:20.3.0
映像相同的方式以 ruby
开头。
对 CRuby 也一样吗?
我怀疑 .getFullYear()
不读取 shell 文件,因此需要修改 RUN
。
PATH
好像有点奇怪,rbenv是不是克隆安装在同一个地方?
我会在 Docker 中跳过 rbenv,而只是:
RUN git clone https://github.com/sstephenson/rbenv.git /root/.rbenv
...
RUN /root/.rbenv/plugins/ruby-build/install.sh
ENV PATH /root/.rbenv/bin:$PATH
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。