$ brew install jq
Launch ngrok before exec command
$ curl https://gist.githubusercontent.com/srea/5c84156f4bde4dd70b533e82d469f8e4/raw/cf62d2503c2082ff01f4172fe058ddd2942c01ee/update_ngrok_subdomain.sh -o update_ngrok_subdomain.sh
$ chmod +x update_ngrok_subdomain.sh
$ ./ngrok http 8080
$ ./update_ngrok_subdomain.sh BITRISE_PERSONAL_ACCESS_TOKEN APP_SLUG