Upgrade bundler in ruby:dev image

iron-io / dockers

Uber tiny Docker images for all the things.

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Upgrade bundler in ruby:dev image #50

Closed treeder closed 8 years ago

treeder commented 8 years ago

I get this:

Warning: the running version of Bundler is older than the version that created the lockfile. We suggest you upgrade to the latest version of Bundler by running `gem install bundler`.