How to use spring gem to run Cucumber tests faster in Queue Mode?

If you use spring gem and spring-commands-cucumber gem to start Cucumber tests faster please set:

export KNAPSACK_PRO_CUCUMBER_QUEUE_PREFIX=bundle exec spring

or you can use spring binstub

export KNAPSACK_PRO_CUCUMBER_QUEUE_PREFIX=bin/spring

Thanks to that Cucumber will start tests faster for each batch of tests fetched from Knapsack Pro Queue API.

export KNAPSACK_PRO_CUCUMBER_QUEUE_PREFIX=bundle exec spring
bundle exec rake knapsack_pro:queue:cucumber