What is the problem here?
The `selenium-webdriver` gem is responsible for downloading the
right version of the `chromedriver` binary and it downloads it into the
`~/.cache/selenium` folder. THe problem here is that when a user runs `bin/turbo_rspec spec/system`
for the first time, all of the processes will try to download the
`chromedriver` binary to the same path at the same time and will lead
to concurrency errors.
What is the fix here?
Before running any RSpec suite, we first check if the `.cache/selenium`
folder is present. If it is not present, we use a file system lock to
download the `chromedriver` binary such that other processes that runs
after will not need to install the `chromedriver` binary.
The long term fix here is to get `selenium-manager` to download the `chromedriver` binary to a unique path for each
process but the `--cache-path` option for `selenium-manager` is currently not supported in `selenium-webdriver`.
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