CODEWITHSUNDEEP
ruby-on-railsrubylinuxdockerdebian
Felix
Felix

Reputation: 5619

Running Rails application in docker container

I want to run a Rails 4.2.1 application in a docker container on a debian machine.

When I run bundle exec rails s I got this error:

Could not find json-1.7.7 in any of the sources
Run `bundle install` to install missing gems.

When I run bundle install I got this error:

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

/usr/local/rvm/rubies/ruby-2.2.1/bin/ruby -r ./siteconf20150604-137-10l84fa.                                                                                              rb extconf.rb
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling generator.c
In file included from generator.c:1:0:
../fbuffer/fbuffer.h: In function 'fbuffer_to_s':
../fbuffer/fbuffer.h:175:47: error: macro "rb_str_new" requires 2 arguments,    but                                                                                                only 1 given
 VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                                           ^
../fbuffer/fbuffer.h:175:20: warning: initialization makes integer from pointer                                                                                             without a cast
 VALUE result = rb_str_new(FBUFFER_PAIR(fb));
                ^
 Makefile:237: recipe for target 'generator.o' failed
  make: *** [generator.o] Error 1

  make failed, exit code 2

 Gem files will remain installed in /var/www/test/xyz/vendor/bundle/ruby/2                                                                                              .2.0/gems/json-1.7.7 for inspection.
Results logged to /var/www/test/xyz/vendor/bundle/ruby/2.2.0/extensions/x                                                                                                86_64-linux/2.2.0/json-1.7.7/gem_make.out
An error occurred while installing json (1.7.7), and Bundler cannot continue.
Make sure that `gem install json -v '1.7.7'` succeeds before bundling.

Whats going wrong? what can I do now?

Upvotes: 0

Views: 687

Answers (2)

kross
kross

Reputation: 3753

docker-rails is a project I just created to make rails with docker (and CI) very easy. I think it can help you and reduce the amount of configuration necessary to get up and running with rails on docker.

It creates a global shared gem volume (to speed up bundler), and has a sample Dockerfile for use.

Given that native error, I'm guessing your Dockerfile is missing a needed package, you may need to update your apt-get statements.

Upvotes: 1

Abhi
Abhi

Reputation: 3611

I got the same error. This error is because of the versions of ruby softwares (gems) that we uses doesn't match at some point.

You are using ruby version 2.2.1. Your Gemfile contains the gems of older versions and it depends on json version 1.7.7.

You should install the following ruby version: 

ruby-1.9.3-p448

to get rid of the error, OR updating your gems that compatible with ruby version 2.2.1 will do the trick.

Upvotes: 1

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