Gemfile local that will allow for special gems only on local env

.1details.md

Differences between team gemfile and your preferences

The solution for the above problem is to have a different gemfile that you run your rails app against. It can be easily done by adding some terminal aliases to use a different gemfile file. I made that in the current configuration and it works well.

.gitignore_global

# ~/.gitignore_global

# Ignore Gemfile.local
/Gemfile.local
/Gemfile.local.lock

.zshrc

# ~/.zshrc or ~/.bashrc
# this works to allow you to write commands like this:
# - $ be rails s  # this will run the rails server using gemfile.local
# - $ be rspec spec # this will run rspec using gemfile.local
# - $ b # this will run bundle install but using gemfile.local
# if you run any of the usual commands then gemfile.local is ignored

alias restart_rails='kill -9 `cat tmp/pids/server.pid`; rails server -d'
alias kill_rails='kill -9 `cat tmp/pids/server.pid`'

__bundle_custom () {
  if [ -f Gemfile.local ]
  then
    echo 'Doing regular bundle'
    bundle $@
    echo 'Copy the regular gemfile.lock file to gemfile.local.lock'
    __bundlelock_copy_to_local
    echo 'Run bundle with gemfile.local'
    BUNDLE_GEMFILE="Gemfile.local" bundle $@
  else
    bundle $@
  fi
}

__bundle_exec_custom () {
 if [ -f Gemfile.local ]
  then
    BUNDLE_GEMFILE="Gemfile.local" bundle exec $@
  else
    bundle exec $@
  fi 
}

__bundle_exec_rails_custom () {
 if [ -f Gemfile.local ]
  then
    BUNDLE_GEMFILE="Gemfile.local" bundle exec rails $@
  else
    bundle exec rails $@
  fi 
}

__bundlelock_copy_to_local () {
  if [ ! -f Gemfile.lock ]
  then
    echo "File Gemfile.lock does not exists"
    exit 1
  fi

  # copy file
  cp Gemfile.lock Gemfile.local.lock

  if [ $? != 0 ]
  then
    echo 'Problem copying file'
  else
    echo 'File copied successfully'
  fi
}

# Rails aliases
alias b='__bundle_custom'
alias be='__bundle_exec_custom'
alias brails='__bundle_exec_rails_custom'
alias copy_local_lock='__bundlelock_copy_to_local'

Gemfile.local

# Add this file in the root of your rails app.

gemfile = File.join(File.dirname(__FILE__), 'Gemfile')
if File.readable?(gemfile)
  puts "Loading #{gemfile}..." if $DEBUG
  instance_eval(File.read(gemfile))
end

group :development,:test do
  gem "binding_of_caller"
  gem 'better_errors'
  gem 'pry'
  gem 'dotenv-rails'

  gem "thin"
end