Add ability to include custom gems

[kidhab]

This might be useful if you want to include gems that are not part of this project. E.g. when a Foodsoft hosting provider want to include turnout to inform about maintenance.

[wvengen]

Interesting idea. Gemfile.lock remains an issue here, how to handle that? Can we separate the two ... ?

[kidhab]

I would leave the Gemfile.lock as it is. It's up to the user to update that file if one adds additional gems to Gemfile.local.

[wvengen]

When people start using this, Gemfile.lock would be updated after a bundle install. I'd expect this change to introduce random Gemfile.lock changes in PRs.

Are there drawbacks to echo "gem 'foo'" >>Gemfile && bundle install for a hosting provider?

[paroga]

I do not think this is a clean solution, since you would need to keep it in sync with Gemfile.lock. IMO hosting providers should install only with bundle install --deployment, which requires that Gemfile.lock is up to date

[kidhab]

Maybe it would be better to do it the other way and include the Gemfile in a Gemfile.local:

# Gemfile.local
eval File.read('Gemfile')

And then run bundle install --gemfile Gemfile.local