I recently had to add two gems to my gem file. When I added them to my gemfile, I pushed directly to my production server.
I SSH’d into my production server, and tried running bundle install. This is the error I go:
>> bundle install
………
>> You are trying to install in deployment mode after changing
your Gemfile. Run `bundle install` elsewhere and add the
updated Gemfile.lock to version control.
If this is a development machine, remove the Gemfile freeze
by running `bundle install --no-deployment`.
You have added to the Gemfile:
* RedCloth
* tanker
When you add gems to your Gemfile, you MUST bundle in your dev environment before pushing and deploying.