Be able to use "bundle exec rake" in production
Be able to use "bundle exec rake" in production

Should remove the soft error seen when deploying:

-----> Detecting rake tasks
       Could not detect rake tasks
       ensure you can run `$ bundle exec rake -P` against your app
       and using the production group of your Gemfile.
       /tmp/build_165ca00c_/vendor/ruby-2.6.6/lib/ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': can't find gem rake (>= 0.a) with executable rake (Gem::GemNotFoundException)
       	from /tmp/build_165ca00c_/vendor/ruby-2.6.6/lib/ruby/2.6.0/rubygems.rb:302:in `activate_bin_path'
       	from /tmp/build_165ca00c_/vendor/ruby-2.6.6/bin/rake:29:in `<main>'

Starkast/wikimum,Starkast/wikimum