bundle install always failing in docker

[ghost]

Summary:

trying to build the docker containers always fails at bundle install

Steps to reproduce:

1. clone the canvas-lms repository
2. run cp docker-compose/config config
3. run docker-compose run --rm web bundle install

Expected behavior:

200 gems installed successfully

What I get:

```/home/docker/.gem/ruby/2.4.0/bin/bundle:23:in load': cannot load such file -- /usr/lib/ruby/gems/2.4.0/gems/bundler-1.16.1/exe/bundle (LoadError) from /home/docker/.gem/ruby/2.4.0/bin/bundle:23:in

'

### Additional notes:
Ubuntu 16.04
16GB RAM

[tierra]

This has been fixed on master branch in 150dfe1

[claydiffrient]

@andrew-gardener The stable is not deprecated. It is our stable branch. We run that in production environments. Master is what we develop off of and that branch gets rolled to the beta branch every 3 weeks. Beta gets rolled to production 3 weeks later. Master generally changes daily and is considered cutting edge.

[andrew-gardener]

@claydiffrient sorry, got confused. meant to reply to #1245 (comment)