bundle install fails silently during nanobox build-runtime

[jedgalbraith]

I'm not sure if this is an issue with nanobox or this engine, but when bundle install fails during nanobox build-runtime I can see a red error flash for a split second, but then the build continues and appears successful according to the CLI. Then when you get into the container you realize it failed because gems are missing. It would be nice if the build-runtime failed if the bundle install fails.

[notxarb]

This shouldn't happen anymore. I put set -e at the top of the scripts so they should bubble the error out.