feat: add shellcheck to dockers for openemr-cmd

[stephenwaite]

Describe the bug

in order to mimic the github ci need apk add --nocache shellcheck in docker builds

To Reproduce

Steps to reproduce the behavior:

1. Add a '....'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior

Client configuration

• OpenEMR version:
• Operating system: