Fail fast when an error happens in script.sh

[ohbarye]

This is a suggestion that is related to #34.

As like the problem reported in #34, when gem installation or rubocop command or any command in the shell script fails, I think also the script should fail immediately and tell the failure through an exit status.

On my end, although the problem described in #34 had been happening in a certain term our team wasn't able to find it keep failing due to the status kept green check mark.

References

ref https://stackoverflow.com/questions/19622198/what-does-set-e-mean-in-a-bash-script

[mgrachev]

@ohbarye 👋 Thank you for your contribution! 🚀

[review-dog]

Hi, @ohbarye! We merged your PR to reviewdog! 🐶
Thank you for your contribution! ✨

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Accept the invite by visiting https://github.com/orgs/reviewdog/invitation.
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[ohbarye]

Thanks for your review and inviting me to the organization! (it's completely automated? 😄 )

[mgrachev]

it's completely automated? 😄

Yes 🙂