bash 如何在 Docker 中正确安装 RVM？
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How to correctly install RVM in Docker?
提问by yegor256
This is what I have in my Dockerfile:
这是我在我的Dockerfile：
RUN gpg2 --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
RUN curl -L https://get.rvm.io | bash -s stable
RUN /bin/bash -l -c "rvm requirements"
RUN /bin/bash -l -c "rvm install 2.3.3"
Works just fine, however, when I start the container, I see this:
工作得很好，但是，当我启动容器时，我看到：
$ docker -it --rm myimage /bin/bash
/root# ruby --version
ruby 1.9.3p484 (2013-11-22 revision 43786) [x86_64-linux]
/root# /bin/bash -l -c "ruby --version"
ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux]
Obviously, this is not what I want. As far as I understand, the problem is that bashdoesn't run /etc/profileby default. That's why Ruby is not coming from the RVM installation. How can I fix that?
显然，这不是我想要的。据我了解，问题是默认情况下bash不运行/etc/profile。这就是 Ruby 不是来自 RVM 安装的原因。我该如何解决？
回答by Зелёный
Long story short:
长话短说：
docker -it --rm myimage /bin/bashcommand does not start bash as a login shell.
docker -it --rm myimage /bin/bash命令不会将 bash 作为登录 shell 启动。
Explanation:
解释：
When you run $ docker -it --rm myimage /bin/bashit's invoke bash without the -loption which make bashact as if it had been invoked as a login shell, rvminitializations depends on the source-ing /path/to/.rvm/scripts/rvmor /etc/profile.d/rvm.shand that initialization is in .bash_profileor .bashrcor any other initialization scripts.
当您运行$ docker -it --rm myimage /bin/bash它时，它会在没有-l选项的情况下调用 bash，该选项bash就好像它已作为登录 shell 被调用一样，rvm初始化取决于source-ing /path/to/.rvm/scripts/rvmor/etc/profile.d/rvm.sh并且该初始化在.bash_profileor.bashrc或任何其他初始化脚本中。
How can I fix that?
我该如何解决？
If you won't, always have the rubyfrom rvmadd -loption.
如果您不这样做，请始终使用rubyfrom rvmadd-l选项。
Here is a Dockerfile with installed rubyby rvm:
这是一个 Dockerfile，安装ruby者为rvm：
FROM Debian
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update -q && \
apt-get install -qy procps curl ca-certificates gnupg2 build-essential --no-install-recommends && apt-get clean
RUN gpg2 --keyserver hkp://keys.gnupg.net --recv-keys D39DC0E3
RUN curl -sSL https://get.rvm.io | bash -s
RUN /bin/bash -l -c ". /etc/profile.d/rvm.sh && rvm install 2.3.3"
# The entry point here is an initialization process,
# it will be used as arguments for e.g.
# `docker run` command
ENTRYPOINT ["/bin/bash", "-l", "-c"]
Run the container:
运行容器：
? docker_templates : docker run -ti --rm rvm 'ruby -v'
ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux]
? docker_templates : docker run -ti --rm rvm 'rvm -v'
rvm 1.29.1 (master) by Michal Papis, Piotr Kuczynski, Wayne E. Seguin [https://rvm.io/]
? docker_templates : docker run -ti --rm rvm bash
root@efa1bf7cec62:/# rvm -v
rvm 1.29.1 (master) by Michal Papis, Piotr Kuczynski, Wayne E. Seguin [https://rvm.io/]
root@efa1bf7cec62:/# ruby -v
ruby 2.3.3p222 (2016-11-21 revision 56859) [x86_64-linux]
root@efa1bf7cec62:/#
回答by ALev
Don't use RUN bash -l -c rvm install 2.3.3. It's very scruffy. You can set shell command by SHELL [ "/bin/bash", "-l", "-c" ]and simply call RUN rvm install 2.3.3.
不要使用RUN bash -l -c rvm install 2.3.3. 它非常邋遢。您可以通过SHELL [ "/bin/bash", "-l", "-c" ]简单地调用来设置 shell 命令RUN rvm install 2.3.3。
