Shellcheck on Github workflow

[lepapareil]

Problem to solve

Lint all bash line scripts contained in Github worflows run section.

Proposal

use yq to extract run section, for example:

for yaml in .github/workflows/*yml ; do
    echo shellcheck <(yq '.jobs[].steps[] | select(.run != null) | .run' $yaml)
done

Tasks to complete

• don't use ${{}} expression on run section, instead prefer env section