shell script CI checks
This adds syntax checkers for all the shell scripts using bash, dash, and checkbashisms, based on availability. It also adds them to the git pre-commit hook, so they can run as people are committing.
The 17.0 major release is coming on May 16, 2024! This version brings many exciting improvements to GitLab, but also removes some deprecated features. We are introducing three breaking change windows during which we expect breaking changes to be deployed to GitLab.com. You can read more about it on our blogpost. The second breaking change window begins 2024-04-29 09:00 UTC and ends 2024-05-01 22:00 UTC.
This adds syntax checkers for all the shell scripts using bash, dash, and checkbashisms, based on availability. It also adds them to the git pre-commit hook, so they can run as people are committing.