Use `shellcheck` for bash script in CI
Clarification and motivation
There is a nice linter for bash scripts called shellcheck
.
Let's use it in our CI along with Haskell linter.
Existing scripts highly likely don't satisfy shellcheck, so they should be updated.
Acceptance criteria
- CI has check that runs
shellcheck
for all bash scripts in the repository. - Existing scripts satisfy it.
Edited by Roman Melnikov