bundler is broken in ruby image: /usr/local/lib/ruby/site_ruby/2.5.0/rubygems.rb:289:in `find_spec_for_exe': can't find gem bundler (>= 0.a) with executable bundler (Gem::GemNotFoundException)

[atsaloli]

I'm not sure if this is related to #73 but I can't use bundler on ruby:latest

root@706ed8f6-fe4a-6eb2-93c7-fdc45af335cd:~/git/namer# docker run -ti --entrypoint bash ruby 
root@65bf395dd6ab:/# ruby -v
ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-linux]
root@65bf395dd6ab:/# bundler -v
Traceback (most recent call last):
        2: from /usr/local/bin/bundler:23:in `<main>'
        1: from /usr/local/lib/ruby/site_ruby/2.5.0/rubygems.rb:308:in `activate_bin_path'
/usr/local/lib/ruby/site_ruby/2.5.0/rubygems.rb:289:in `find_spec_for_exe': can't find gem bundler (>= 0.a) with executable bundler (Gem::GemNotFoundException)
root@65bf395dd6ab:/# gem list bundler

*** LOCAL GEMS ***

bundler (default: 1.16.1)
root@65bf395dd6ab:/# 

[atsaloli]

I tried to uninstall the Bundler gem, but:
a) bundler is not installed in GEM_HOME
b) it's still showing installed after I uninstall it:

root@65bf395dd6ab:/# gem list bundler

*** LOCAL GEMS ***

bundler (default: 1.16.1)
root@65bf395dd6ab:/# gem uninstall bundler
ERROR:  While executing gem ... (Gem::InstallError)
    bundler is not installed in GEM_HOME, try:
        gem uninstall -i /usr/local/lib/ruby/gems/2.5.0 bundler
root@65bf395dd6ab:/# gem uninstall -i /usr/local/lib/ruby/gems/2.5.0 bundler
Remove executables:
        bundle, bundler

in addition to the gem? [Yn]  Y
Removing bundle
Removing bundler
Successfully uninstalled bundler-1.16.1
root@65bf395dd6ab:/# gem list bundler

*** LOCAL GEMS ***

bundler (default: 1.16.1)
root@65bf395dd6ab:/# 

[tianon]

What is the bundler executable supposed to be for / do? bundle -v appears to work properly 😕

[atsaloli]

I don't know, @tianon. I was working through the training at http://container.training/ when this came up.

This is no longer pressing for me, as after changing the Dockerfile from FROM ruby to FROM ruby:2.1 I was able to get through the exercise.

Thanks!

[yosifkit]

It seems that this works in the most recent version. 😕 It seems that a new version of ruby fixed it (2.5.0p0 -> 2.5.1p57).

$ docker pull ruby
Using default tag: latest
latest: Pulling from library/ruby
cc1a78bfd46b: Already exists 
6861473222a6: Pull complete 
7e0b9c3b5ae0: Pull complete 
3ec98735f56f: Pull complete 
9b311b87a021: Pull complete 
598f3b74c68f: Pull complete 
7f4c0751f696: Pull complete 
2956d2d1f81e: Pull complete 
Digest: sha256:469d2c6b8bc6a96e59b528c8bd617d5d81b9089eeacb528681714fa4af002a8d
Status: Downloaded newer image for ruby:latest
$ docker run -it --rm ruby bash
root@c4d5efef7415:/# ruby -v
ruby 2.5.1p57 (2018-03-29 revision 63029) [x86_64-linux]
root@c4d5efef7415:/# bundler -v
Bundler version 1.16.1
root@c4d5efef7415:/# bundle -v
Bundler version 1.16.1
root@c4d5efef7415:/# exit

[atsaloli]

Good to know, thanks, @yosifkit ! :)