我想在项目中使用快速cpm模块安装程序而不是cpanm。

另外，我使用perlbrew安装目标perl版本。

根据cpm 选项的文档-g将模块安装到当前的@INC中

如何在Dockerfile中强制Perlbrew更改@INC？

以下是我的Dockerfile的一部分

RUN perl -le 'print for @INC' && \
    perlbrew switch perl-5.31.0 && \
    perl -le 'print for @INC' && \
    cpm install -gv CGI && \
    perlbrew list-modules

当我构建Dockerfile时，两次的输出perl -le 'print for @INC'相同：

/etc/perl
/usr/local/lib/x86_64-linux-gnu/perl/5.22.1
/usr/local/share/perl/5.22.1
/usr/lib/x86_64-linux-gnu/perl5/5.22
/usr/share/perl5
/usr/lib/x86_64-linux-gnu/perl/5.22
/usr/share/perl/5.22
/usr/local/lib/site_perl
/usr/lib/x86_64-linux-gnu/perl-base

但是，如果我手动执行相同操作，结果也可以：

$ docker run -it pavelsr/xxxhub
root@1a34ea34a3fb:/# perl -le 'print for @INC'
/etc/perl
/usr/local/lib/x86_64-linux-gnu/perl/5.22.1
/usr/local/share/perl/5.22.1
/usr/lib/x86_64-linux-gnu/perl5/5.22
/usr/share/perl5
/usr/lib/x86_64-linux-gnu/perl/5.22
/usr/share/perl/5.22
/usr/local/lib/site_perl
/usr/lib/x86_64-linux-gnu/perl-base
.
root@1a34ea34a3fb:/# perlbrew switch perl-5.31.0

A sub-shell is launched with perl-5.31.0 as the activated perl. Run 'exit' to finish it.

root@1a34ea34a3fb:/# perl -le 'print for @INC'
/usr/local/perlbrew/perls/perl-5.31.0/lib/site_perl/5.31.0/x86_64-linux
/usr/local/perlbrew/perls/perl-5.31.0/lib/site_perl/5.31.0
/usr/local/perlbrew/perls/perl-5.31.0/lib/5.31.0/x86_64-linux
/usr/local/perlbrew/perls/perl-5.31.0/lib/5.31.0
root@1a34ea34a3fb:/# cpm install -g CGI
DONE install HTML-Tagset-3.20
DONE install HTML-Parser-3.72
DONE install CGI-4.44
3 distributions installed.
root@1a34ea34a3fb:/# perlbrew list-modules
CGI
HTML::Parser
HTML::Tagset
Perl