Whenever gem 'failed to load command: rake' - ruby

Question

looking for some help.
I am running a rails app (v3.2.5) with the whenever gem (v0.9.7) and rake (v11.2.2). I am also doing this in a docker container image ruby:2.3 (cron was installed and bundle install was ran)
Here is my schedule.rb
set :environment, ENV['RAILS_ENV']
every '*/2 9,10,11,12,13,14,15,16 * * 1-5' do
rake "import_csv", output: {:error => 'log/import_csv_errors.log', :standard => 'log/import_csv.log'}'
end
note RAILS_ENV is set at container launch to development
Here is my cron job that is on the container after build (crontab -l):
# Begin Whenever generated tasks for: /usr/src/app/config/schedule.rb
*/2 9,10,11,12,13,14,15,16 * * 1-5 /bin/bash -l -c 'cd /usr/src/app && RAILS_ENV=development bundle exec rake import_csv --silent >> log/import_csv.log 2>> log/import_csv_errors.log'
# End Whenever generated tasks for: /usr/src/app/config/schedule.rb
When this cron job runs, the logs return:
import_csv_errors.log
Bundler::GemNotFound: Could not find rake-11.2.2 in any of the sources
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/spec_set.rb:95:in `block in materialize'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/spec_set.rb:88:in `map!'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/spec_set.rb:88:in `materialize'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/definition.rb:140:in `specs'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/definition.rb:185:in `specs_for'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/definition.rb:174:in `requested_specs'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/environment.rb:19:in `requested_specs'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/runtime.rb:14:in `setup'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler.rb:95:in `setup'
/usr/local/lib/ruby/gems/2.3.0/gems/bundler-1.12.5/lib/bundler/setup.rb:19:in `<top (required)>'
/usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
/usr/local/lib/ruby/site_ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
import_csv.log
bundler: failed to load command: rake (/usr/local/bin/rake)
Now here is the odd thing. If I copy the cron job command:
/bin/bash -l -c 'cd /usr/src/app && RAILS_ENV=development bundle exec rake import_csv --silent >> log/import_csv.log 2>> log/import_csv_errors.log'
and run this in the container, it works fine, but if the cron job runs it, I get thos errors in the logs!!! I am at a lost here...
I've tried adding
env :PATH, ENV['PATH']
env :GEM_PATH, '/usr/local/bundle'
to the top of schedule.rb and I tried doing
command 'cd /usr/src/app && RAILS_ENV=development bundle exec rake import_csv --silent >> log/import_csv.log 2>> log/import_csv_errors.log'
Instead of using rake in the task and I get the same errors..
Any help is appriciated

Answer 1

I've fixed the same error by modifying the Dockerfile with:
RUN gem update --system 2.6.12
RUN gem install bundler --version 1.14.6
And schedule.rb:
ENV.each { |k, v| env(k, v) }

Answer 2

I have updated my rake version and it worked for me. Below are the steps I followed:
sudo bundle update rake
sudo bundle install
Open a Rakefile and replace the line rake/rdoctask with require 'rdoc/task'.

Answer 3

I resolved my issue by using a different image and building as I needed it instead of using docker hub image ruby:2.x.
Dockerfile (edited to fit thread):
FROM ubuntu:14.04
# Installs needed to run rails on ubuntu 14.04 (must use mysql 5.6 or 5.5):
RUN apt-get update && apt-get install -y apache2 curl git build-essential libmysqlclient-dev mysql-server-5.6 nodejs make
RUN apt-get update && apt-get install -y ruby-dev zlib1g-dev
RUN gem install rails --version 3.2.5 --no-ri --no-rdoc
# Update ruby to v2.2 (optional)
RUN apt-get install -y software-properties-common && apt-add-repository ppa:brightbox/ruby-ng
RUN apt-get update && apt-get install -y ruby2.2
# Install cron
RUN apt-get install -y cron
# Finish the build
RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app
# If you code is in the same directory you ran docker build then:
COPY . /usr/src/app
RUN bundle install
RUN whenever --update-crontab
CMD ["passenger start"]