$ make
ruby performance.rb
user system total real
7.634225 0.025402 7.659627 ( 7.726734)
docker run -it -v "/Users/sergei/Code/SoftTelematics/docker-performance-test:/app" -w /app ruby:2.5.1 ruby performance.rb
user system total real
5.690000 0.010000 5.700000 ( 5.720901)