# run and remove container
docker run --rm $(docker build -q .)
enable gil took about more than 3 times performance time.
nogil=True
fibo: 9227465 elapsed time 16.095300436019897.
fibo: 9227465 elapsed time 16.52220582962036.
fibo: 9227465 elapsed time 16.68897533416748.
fibo: 9227465 elapsed time 16.693021774291992.
fibo: 9227465 elapsed time 16.901812314987183.
fibo: 9227465 elapsed time 16.987688779830933.
fibo: 9227465 elapsed time 20.314191818237305.
fibo: 9227465 elapsed time 20.323174953460693.
nogil=False
fibo: 9227465 elapsed time 66.92367959022522.
fibo: 9227465 elapsed time 70.01325607299805.
fibo: 9227465 elapsed time 70.25191235542297.
fibo: 9227465 elapsed time 71.103266954422.
fibo: 9227465 elapsed time 71.86525321006775.
fibo: 9227465 elapsed time 71.93268299102783.
fibo: 9227465 elapsed time 72.1888496875763.
fibo: 9227465 elapsed time 72.25596213340759.